1 A steel rod of 20 mm diameter and 500 mm long is subjected to an axial pull of 30 kN. If E x 105 N/mm2, the elongation of the rod will be

0.239 mm

0.0239 mm

0.00239 mm

23.9 mm

2 What is the strain in a bar having cross-section area 50 mm2 subjected to 10 kN axial load? Assume young's Modulus as 2 x 105 N/mm2.

0.001

0.002

0.0001

0.01

3 If the end portion of a beam is extended beyond the support, it is known as

Cantilever beam

Continuous beam

Overhanging beam

Fixed beam

4 A rectangular section has 200 mm depth and 300 mm width. Determine Moment of Inertia about centroidal axis parallel to the width.

450 x 106 mm4

200 x 106 mm4

300 x 106 mm4

600 x 106 mm4

5 Section Modulus of a circular cross-section about its diameter is given as......

pi D4/16

pi D3/32

pi D4/32

pi D4/64

6 Deflection of a Cantilever beam, measured at its free end, subjected to uniform load intensity over a span is given as
=Young's Modulus; I =Moment of Inertia about Neutral axis)

wl4 EI

wl4 EI

wl4 EI

wl4 /16 EI

7 What is the slope at the fixed end of a cantilever beam, subjected to concentrated load at its free end

30°

90°

0°

None

8 Deflection at the centre of a simply supported beam, with uniformly distributed load per unit length over the entire span having modulus of elasticity "E" and Moment of Inertia is given as









9 Euler's Buckling load on a column of length with both ends hinged, is given as =Young's Modulus; I Moment of Inertia of Column Cross-section)

pi EI/ l2

pi EI/ l

pi2 EI l2

2pi2 EI /l2

10 Water main 800 mm in diameter contains water at a pressure load of 120 m. If density of water is 10000 determine the metal thickness with allowable tensile stress 24 N/mm2.

10 mm

20 mm

24 mm

18 mm

11 Very thin grinding wheels are made with

Shellac bond

Rubber bond

Vitrified bond

Resinoid bond

12 What are the main raw materials required for production of pig iron?

Iron, coal and flux

Iron ore, coke and lime stone

Iron ore, cooking coal and flux

Iron ore, coal and dolomite

13 What are the main constituents of Babbitt metal used in industry?

Copper-tin-antimony

Copper-tin-phosphorus

Copper-tin-nickel

Copper-zinc-nicke1

14 Which metal is used for a wide variety of small components of electrical equipment, buses, ordinance work and belts, rods, tubes, etc.

Monel metal

Bell metal

MUlltzmetal

Gun metal

15 Which of the following is a chipless machining process?

Knurling

Metal spinning

Hobbing

Lapping

16 For which engineering purposes, uranium, thorium, plutonium, zirconium, beryllium, niobium and their alloys are primarily used?

Electronic Engineering

Nuclear Engineering

Telecommunication Engineering

Computer Engineering

17 Which process of metal-working is simply a plastic deformation performed to change shape and dimensions by mechanical pressure?

ECM

EDM

Extrusion

Shaping

18 Tumbling is done to

remove blow holes

create hard surface

clean the casting

fill-up the blow holes

19 What is the temperature of metal in hot working process at which new grains are formed?

Below the recrystallisation temperature

Above the recrystallisation temperature

At melting temperature

Above melting temperature

20 Withdrawal of the pattern from the sand of the mould, without breaking the mould, is possible by providing

shrinkage allowance

draft

rapping allowance

finish allowance

21 The process used for making large-diameter pipes, hollow propeller shafts or gun barrels, is

Centrifugal casting

Forging

Rolling

Die-casting

22 Which heat treatment is applied to remove stresses and improve the mechanical properties and increase machinability

Normalising

Hardening

Tempering

Annealing

23 What are the two basic ways of metal cutting using a single-point cutting tool and a multi-point cutting tool?

"Single" and "multi-direction" cutting

"Perpendicular" and "Oblique" cutting

"Orthogonal" and "Oblique" cutting

"Orthogonal" and "Straight" cutting

24 What device is used for holding and rotating a hollow piece of work that has been previously drilled or bored?

Collet chuck

Mandrel

Lathe centre

Catch plate

25 In metric standard, reciprocal of circular pitch of spur gear is described as

Addendum

Dedendum

Module

Backlash

26 Shldy the following statements:
A -Tailstock of Engine-Lathe is replaced by turret in hlrret lathe
B -Turret lathe is used for very small precision jobs
C -Turret lathe can be tape controlled

A and B are true

A and C are true

B and C are true

All are true

27 A method of grinding external cylindrical surfaces, in which the work is supported among a regulating wheel, grinding wheel and a work rest blade, is known as

Snagging grinding

Cylindrical grinding

Centreless grinding

Form grinding

28 Small internal gear teeth are cut in one operation by a tool having a number of cutting edges equal to the number of teeth on the gear. Name the tool.

Milling tool

Hobbing tool

Broaching tool

Reaming tool

29 The device, used for dividing the periphery of the gear blank into a desired number of equal parts, is

Combination head

Dividing head

Multiple head

Periphery head

30 It is essential to do annealing and pickling, after performing

drilling

grinding

metal spinning

broaching

31 The number of collars are provided to carry a fixed axial load in a flat collar bearing

to reduce frictional torque

to increase frictional lorque

to increase intensity of pressure

to decrease intensity of pressure

32 For the same pitch, the efficiency of screw jack with square threads is

more than that with V-threads

Jess than that with V-threads

same as that with V-threads

dependent only on the load on the jack

33 The friction acting on body while in motion, is called

Static friction

Dry static friction

Dynamic friction

Static and dvn,Hnic friction

34 Hartnell governor is

Spring-loaded type governor

Dead-weight-loaded type governor

Pendulum type governor

Inertia governor

35 For the same mass of flywheel

the disc type flywheel is preferable

the rim type flywheel is preferable

preference will depend upon the type of the prime mover

any type is equally preferable

36 For the same maximum fluctuation energy of a flywheeL if the mean speed of rotation is more

the size of the flywheel is reduced

the size of the flywheel is increased

the size of the flywheel is not dependent on the speed and is unaffected

working is safer

37 Angular acceleration of a link AB is found by dividing the

centripetal component of acceleration of B relative to A by length AB

linear velocity of B relative to A by length AB

total acceleration of B relative to A by length AB

tangential component of acceleration of B relative to A by length AB

38 Kennedy's theorem states instantaneous centres lie on that, if three rigid links have plane motion, their

a triangle

a point

a straight line

none of the above

39 A bolt and nut forms

a turning pair

spherical pair

sliding pair

screw pair

40 The motion of a rotating shaft in foot step bearing, constihltes between the elements of a kinematic pair

successfully constrained motion

completely constrained motion

incompletely constrained motion

unsuccessfully constrained motion

41 A perfect fluid is

compressible and gaseous

a real fluid

incompressible and frictionless

one which obeys perfect gas laws

42 Continuity equation deals with the law of conservation of

mass

momentum

energy

none ofthe above

43 Select the correct statement.

Absolute pressure (Gauge pressure Atmospheric pressure)

Gauge pressure (Absolute pressure Atmospheric pressure)

Absolute pressure (Atmospheric pressure Vacuum pressure)

Gauge pressure (Atmospheric pressure Vacuum pressure)

44 All fluids exert

pressure in the direction of flow only

pressure in the direction of force of gravity

equal pressure in all directions

equal pressure only in y and z planes

45 A fluid is a substance that

always expands until it fills any container

is practically incompressible

cannot remain at rest under action of any shear force

cannot be subjected to shear force

46 A pump is a device which converts

hydraulic energy into mechanical energy

mechanical energy into hydraulic energy

kinetic energy into mechanical energy

none of the above

47 Governing of turbine means

head is kept constant under all conditions of working

the speed is kept constant under all conditions

the discharge is kept constant under all conditions

none of the above

48 The casing of a centrifugal pump is made spiral, so as

to reduce hydraulic losses

to convert kinetic energy into pressure energy

to convert pressure energy into kinetic energy

to facili ta te priming

49 High head of water is required for

Francis turbine

Propeller turbine

Pelton wheel

Kaplan turbine

50 The relation between hydraulic efficiency mechanical efficiency and overall efficiency is

nh n0 x nm

n0 nh x nm

n0 (nm nh)

None of the above

51 The primary fuel used in nuclear power plant is

U235

U238

P239

P233

52 Which of the following is not a non-conventional energy source?

Solar energy

Wind energy

Coal

Bio-gas

53 Capital and generation cost of geothermal power plant is

more than those of nuclear power plant

more than those of steam power plant

more than those of hydel power plant

least among the types mentioned above

54 Standard value of the solar constant is

1353 W/m2

1353 kW/m2

1000 W/m2

1353 MW/m2

55 Direct energy conversion system include

Magnetohydrodynamic system

Geothermal system

Tidal power system

None of the above

56 Wind energy is actually put into use in Maharashtra at

Deogad

Pune

Nagpur

Mumbai

57 Which of the following is the most important commercial source of energy in India at present?

Solar energy

Oil

Coal

Uranium

58 The process of supplying the intake air to the engine cylinder, at a density greater than the density of surrounding ahnospheric air. is known as

Superchargillg

Scavenging

Detonation

None of the above

59 Energy may be defined as

A "push" or "pull"

The product of force and velocity

The capacity to do work

The product of mass and acceleration

60 Which of the following is NOT a thermal prime mover?

Water turbine

Steam turbine

Gas turbine

Petrol engine

61 In a Theoretical Rankine cycle, expansion is assumed to be

polytropic

hyperbolic

isentropic

isothermal

62 for C.I. Engines, the compression ratio is in the range of

5 to 9

12 to 20

1 to 2

none of the above

63 A short chimney is provided for

Lancashire Boiler

Babcock and Wilcox Boiler

Locomotive Boiler

Cochran Boiler

64 The weight of I.he diesel engine, compared to similar petrol engine is

2 to 3 times greater

2 to 3 times smaller

almost equal

none of the above

65 Of the following four fuels, the highest calorific value is possessed by

Kerosene

Diesel

Petrol

Vegetable oil

66. The S.I. Engines are high speed engines with operating speeds in the range of

1000 to 2000 r.p.m

3000 to 5000 r.p.m.

10000 to 12000 r.p.m

none of the above

67 Which one is the low-pressure steam generator?

Benson steam generator

Loeffler steam generator

Volex steam generator

none of these

68 Compression ratio for compressor is always

more than 1.0

less than 1.0

equal to 1.0

zero

69 Compressor capacity is expressed in

m3/kg

KW

KWh

m3/min

70 In a compressor, the clearance volume is kept minimum, because it affects

isothermal efficiency

compressor efficiency

volumetric efficiency

none of the above

71 The performance of a reciprocating compressor is expressed by

adiabatic work

isothermal work

isothermal work/indicated work

none of the above

72 Air conditioning controls

temperature only

humidity only

motion of air and humidity

All the above three factors

73 In a multi-stage compression with intercooling, work required is

reduced

increased

not changed

none of the above

74 In a double acting compressor, the air is compressed

in a single cylinder

in two cylinders

in two stages on one side

in a single cylinder on both sides

75 In a compressor, the volume of air sucked during the suction stroke is known as

free air delivered

swept volume

compressor capacity

none of the above

76 The ratio of delivery pressure to suction pressure of air is called

volwnetric efficiency

expansion ratio

compression efficiency

compression ratio

77 In a two-stage air compressor, an intercooler is placed

before L.P. cylinder

after H.P. cylinder

in between L.P. and H.P. cylinder

none of the above

78 1 ton of refrigeration is the

mass of refrigerant flow per second

mass of refrigeration unit

rate of ice formed per second

heat extraction at a rate of 3.5 kJ per second

79 A house-hold refrigerator works on

vapour absorption cycle

vapour compression cycle

Carnot cycle

Bell-Coleman cycle

80 The voltage required to produce a spark between the spark points in spark plug is in the ranger

2 to 4 kV

5 to 5.5 kV

6 to 10 kV

12 to 15 kV

81 The ratio of heat extracted from refrigerant to work supply is called

coefficient of performance of heat pump

coefficient of performance of refrigerator

refrigeration efficiency

relative coefficient of performance

82 What is the refrigerant used in a house-hold refrigerator

Freon-22

Freon -11

Freon-12

NH3

83 Bell-Coleman cycle is a

reversed Carnot cycle

reversed Joule cycle

reversed Otto cycle

none of the above

84 The C.O.P. of a one-ton VCC refrigerating machine is 3.5. The minimum power needed to run this machine would be

1.00 HP

1.00 KW

1.00 KWh

3.50 KW

85 A domestic refrigerator has an expansion device in the form of a/an

Automatic expansion valve

Hand operated expansion valve

Float valve

Capillary tubes

86 A package type Air conditioner has a capacity upto around

1 ton

100 tons

20 tons

none of the above

87 This reading will be the same in Centigrade and Fahrenheit temperature units.

100°

-100°



40°

88 Absolute humidity is defined as

Weight of water vapour present in unit volume of air

Weight of water vapour present in 1 Kg of air

Weight of moist air per m3 of volume

none of the above

89 The function of a governor of steam engine is to

save steam

control the speed

provide safety to the people around

maintain constant load on the engine

90 Humidostat is a device which is sensitive to

Moisture changes

Temperature changes

Moishlre and temperature changes

None of the above

91 Which of the following wage incentive plan is applied to all workers and guarantees minimum wage?

Halsey Plan

Gantt Plan

Emerson's Efficiency Plan

Rowan Plan

92 SIMO charts are used in

Method study

Micromotion study

Process Analysis

Layout analysis

93 CPM is.....oriented technique.

time

event

activIty

target

94 Actual observed time for an operation time was 1 min/piece. If the performance rating of the operator was 120 and a personal time is to be provided, the standard time in minipiece is

1

1.2

1.25

1.26

95 Pneumatic comparator is useful for inspection of

Gun bores

Taper Plug gauges

Thread profiles

Large concave radius

96 Which of the following is a technique used for forecasting?

PERTICPM

Exponential smoothing

Gantt Chart

Control Chart

97 Acetylene gas is stored in form in cylinders.

solid

liquid

gaseous

anyone of the above

98 Gear hobbing produces more accurate gears than milling as, in hobbing

there is a continuous indexing operation

pressure angle is larger

hob and work piece both rotate without any inter-relation

special multi-tooth cutter is used

99 ..... is the code of carbide tip tools to be used on grey-cast iron for rough machining.

K 05

P 20

K 30

P 05

100 Rake angle of a single point cutting tool corresponds to..... of a twist drill.

Chiesel edge angle

Point angle

Helix angle

Lip clearance angle

101 In sheet metal work the cutting force on the tool can be reduced by

grinding the cutting edges sharp

increasing the hardness of die

increasing the hardness of punch

providing "shear" on tool

102 The jig boring machine finds its application where

holes of accurate centre-to-centredistance are required

the holes of the drilling jigs are to be accurately finished

the holes to be drilled are at inaccessible position

the holes to be drilled are in different planes

103 Issue of work orders to start production according to the schedule is called

Dispatching

Routing

Monitoring

Expediting

104 In case of break-even analysis, a change in product mix is likely to influence

profits

break-even point

contribution

all of the above

105 Interference bands will be obtained if

Rays of light from different source are in contact

two rays of same wavelength and out off phase by iwavelength are in contact

two rays of same wavelength and in phase are in contact

two rays of different wavelength and in phase with one another

106 With as the acceptance number and as the sample size, the ideal O.c. curve can be ob tained with

C n 0

C n 0

C n 1

C n 1

107 For 3 sigma limits used in S.Q.C. probability of acceptance is

68.26

85.00

99.73

95.46

108 Centimeter is used to measure

angle between two surfaces

centre distance between two unknown holes

concavitv of bore

radius of balls

109 To scribe lines parallel to the edges of a part, the instrument used is

Vernier caliper

Screw gauge

Hermaphrodite caliper

Combination set

110 Parallax error is due to

error in reading of an operator

characteristic of instruments

influence of environmental condition

dynamic error of the instrument

111 Match the pairs of instruments and their applications:
List-I List-II
Instruments Applications
I. Tool Makers Microscope A) Surface profile
II. Autocollimator B) Thread profile parameters
III. Dial gauge with stand C) Squareness testing
IV. Talysurf D) Machine setting

Select the correct pairs froIll the following

I II III IV
B C D A

II I III IV
B A C D

IV III I II
B A C D

III I II IV
B D A C

112 The Parkinson gear tester is used for measuring

Runout test of gears

Pitch of gear tooth

Tooth thickness

Composite errors and backlash of gears

113 Life reliability of product is decided by

Qualitvassurance

Quality of design

Quality of manufacture

Quality of performance

114 In what type of sampling plan average number of pieces inspected is lowest?

Single sampling plan

Double sampling plan

Multiple sampling plan

None ofthe above

115 Two wire/three wire method is adopted for measurement of

Major diameter of screw

Core diameter of screw

Effective diameter of screw

None of the above

116 The fit on a hole-shaft is specified as H7-S6. The type of fit is

clearance

sliding

interference

transition

117 Process capability of a machine can be determined by using

x chart alone

R chart alone

p-chart

x and R chart together

118 A taper of internal dovetail can be measured with the help of

Sine bar

Balls of standard dimension and slip gauges

Combination set

Clinometer

119 The statistical quality control was developed by

Frederick Taylor

Walter Shewhart

George Dantzig

W.E. Demig

120 The number of observations to be made on a machine for work sampling study for an absolute accuracy of with 95% confidence level, (if probability of machine being busy is is equal to

4P(100-P)/A2



9P(100

2P(100

121 Two 30 resistors are connected in parallel. What resistance should be connected in series with this parallel combination so that the power in each 30 resistor is one fourth of the total power? Indicate your choice of correct answer.

30

15

10

120

122 In an A.C. circuit having R and L in series

voltage leads the current

current leads the voltage

voltage and current are in phase

none of the above

123 The equivalent inductance L of two series connected inductors Land L2, when their 1 fluxes assist each other is given by (Where M =Mutual inductance between them)

L L1 L2 -2M

L L1 L2 2M

L L1 L2

L L1 L2

124 A sinusoidal voltage is represented by Vm sin wt with standarrl. notations. Which one of the following represents the average value of this voltage?

2 Vm/pi

Vm/2

pi Vm/2

zero

125 In a single phase a.c. circuit, an impedance consists of a resistance and a capacitance. The power factor of the circuit is

unity

zero

leading

lagging

126 An ideal transformer is used to step down the voltage of a 230 V circuit to 23 V. It is fully loaded when it delivers 2.3 kVA. What is the rated current for low-voltage winding?

10A

1A

100 A

0.1 A

127 The maximum efficiency of a I-phase transformer occurs when

it carries full load at 0.8 p.f. lagging

it carries full load at unity p.f.

it carries no load

the iron losses of the transformer equal the copper losses of the same

128 Open-circuit test of a transformer gives

copper losses in the transformer

iron-losses in the transformer

insulation losses in the transformer

hysteresis losses in the transformer

129 The ultimate advantage of using an iron core rather than an air core in a transformer is that

mutual inductance is increased

greater amount of energy is transferred to secondary

there is less leakage of flux

reluctance offered is much less

130 A three phase induction motor connected to a three phase supply with a phase sequence of rotates in clockwise direction. Which of the following effects are observed if the phase sequence is changed to

Rotate in anticlockwise direction

Continue to rotate in clockwise direction

Not rotate

Oscillate

131 A motor used for a ceiling fan is

a universal motor

a shaded pole single phase induction motor

a capacitor start single phase induction motor

a capacitor run single phase induction motor (permanent capacitor single phase induction motor)

132 When a motor-speed of 5000 rpm is required using A.c. supply, the choice of the motor is

universal motor

shaded pole motor

capacitor-start induction motor

synchronous motor

133 A d.c. series generator has a no load induced e.m.f. of 10 volts. If its speed is doubled, the no load induced e.m.f. is

20 volts

10 volts

5 volts

zero volt

134 In dynamometer wattmeter, to compensate for the inductance of pressure coil circuit, capacitor is connected

in parallel with current coil

in series with pressure coil

in series with current coil

in parallel with pressure coil

135 Single phase energy meter may be classified as

indicating type instrument

integrating type instrument

induction type instrument

recording type instrument

136 Silicon controlled rectifier is

Bi-directional

Uni-directional

Both and

None of the above

137 Avalanche breakdown is primarily dependent on phenomenon of

collision

doping

ionization

recombination

138 In which order the blocks appear in the block diagram of a complete regulated power supply unit

Rectifier-regulation-filter-transformer-load

Transformer-rectifier-filter-regulator-load

Transformer-rectifier-regulator-filter-load

Rectifier-regulator-filter-transformer-load

139 In an automatic electric iron the temperature transducer used is

Bimetallic strip

Thermocouple

R.T.D.

Thermister

140 After firing an SCR, the gating pulse is removed. Then the current in the SCR will

remain the same

immediately fall to zero

rise up

rise a little and then fall to zero

141 The colour of light emitted by a LED depends on

its forward bias

its reverse bias

the amount of forward current

type of semiconductor material used

142 In an oscillator circuit, of the output is fed back positively to the input. What is the minimum gain required for oscillations to occur? (Assume that proper phase-shift is achieved)

50

0.95

20

1.05

143 Match List-I and List-II and select correct code.
List-I List-II
LVDT Temperature measurement
Piezoelectric pick up Displacement measurement
Thermister Pressure measurement
Capacitive transducer Acceleration measurement

A B C D
II III IV I

A B C D
II IV I III

A B C D
I II III IV

A B C D
II III I IV

144 The sweep frequency of time base generator is adjusted to 4 KHz. How many cycles of a sinusoidal signal with frequency 2 KHz are viewed

a full cycle

two cycles

a half cycle

four cycles

145 Zener diodes are used for

amplification of a.c. signal

attenuation of a signal

phase shift introduction

voltage regulator circuits

146 Hot wire anemometers are employed for measurement of

volume and mass flow

temperature

pressure

displacement

147 When emitter-base junction of a transistor is reverse-biased, the collector current

decreases for PNP transistor

increases for NPN transistor

stops, irrespective of PNP or NPN

reverses, irrespective of PNP or NPN

148 The time interval between two consecutive peaks of output voltage waveform of a half wave rectifier fed from a 50 Hz input is

5 milliseconds

10 milliseconds

15 milliseconds

20 milliseconds

149 Consider the following statements A and R. Assertion UJT is a negative resistance device.

Reason UJT has only one p-n junction.

Select your answer from the following alternatives:

Both and are true and is correct explanation of

Both and are true but is NOT the correct explanation of

is true but is false.

is false but is true.

150 T.V.M. is superior to conventional voltmeter because
it has high input impedance
it enables the measurement of low a.c. and d.c. voltages
it enables measurement of high frequency voltages

Select your answer from the following:

alone is true

alone is true

and are true

and are all true