1. The product of mass and velocity is known as

Impulse

Momentum

Power

Work

2. The co-efficient of friction depends on

Area of contact

Shape of surfaces

Strength of surfaces

Nature of surfaces

3. Angle of friction is the

Angle between normal reaction and the resultant of normal reaction and the limiting frictional force ...

Ratio of limiting friction and normal reaction

Ratio of static and dynamic friction

None of the above

4. A machine is one that

transfer motion

does useful work

have relative motion between links

have a number of members

5. The ratio of linear stress to the linear strain is called

Modulus of rigidity

Modulus of elasticity

Bulk modulus

Poisson's ratio

6. Limiting force of friction is defined as the frictional force which exists when a body

is moving with maximum velocity

is stationary

just begins to slide over the surface

None of these 1

7. If the bulk modulus is modulus of Elasticity is E and Poisson's ratio is then which m ... of the following is true

<img src='./qimages/3399-7.jpg'>

8. The value of Poisson's ratio is always

more than 1

1

less than 1

None of these

9. The velocity ratio of Weston's differential pulley is

(Where R Radius of bigger pulley
r Radius of smaller pulley)

<img src='./qimages/3399-9.jpg'>

10. In first system of pulley, the mechanical advantage is equal to (where n no. of pulleys)

2n-1

2n

n

2n-1

11. Bow's notation is used to indicate

forces

moment

pressure

velocity

12. In thin cylindrical shell, the value of circumferential stress as compared to the longitudinal stress is

Equal

Double

Triple

None of these

13. In comparison to rolling friction, the value of sliding friction is

more

less

equal

double

14. The unit of moment is

N/m

N-m

N/m2

N-m/sec

15. The ratio of limiting force and normal reaction is known as

co-efficient of friction

angle of friction

angle of repose

frictional resistance

16. Which one of the following is not a unit of energy

Newton-metre

kCal

Watt

Watt-hours

17. In case of concurrent and coplanar forces, the condition of equilibrium is

<img src='./qimages/3399-17.jpg'>

18. Moment of inertia of a body does not depend upon

mass of the body

distribution of mass in the body

axis of rotation of the body

angular velocity of the body

19. A body in Simple Harmonic Motion will have maximum velocity when its amplitude is

maximum

negative maximum

zero

average

20. A simply supported beam AB of length 9 carries a uniformly distributed load of 10 kN/m for a distance of 6 m from end A. What are the reaction forces at A and at B

40Nand20N

60Nand20N

20Nand60N

30Nand15N

21. An effort of 100 N is applied to a machine to lift a load of 900 N. The distance moved by the effort is 100 cm. The load is raised through a distance of 10 cm. What is the efficiency of the machine

80%

90%

70%

60%

22. For a perfect frame, the number of joints and the number of members are given by

n=2j-3

j=2n-3





23. A body of weight 100 N is placed on a rough horizontal plane. What will be the co-efficient of friction between surfaces if a horizontal force of 60 N just causes the body to slide over the horizontal plane

0.3

0.4

0.5

0.6

24. Three parallel forces F1, F2 and F3 are acting on a log as shown in Figure and the body is 23 in equilibrium. If force F1 250 N and F2= 1000 and the distance between F1 and F2 is 1.0 then what is the distance of F2 from F3

<img src='./qimages/3399-24.jpg'>

25. A weight of 1000 N is supported by two chains as shown in Figure. What will be the tension in Chain-1 and Chain-2 respectively

<img src='./qimages/3399-25.jpg'>

500N;866N

500N;433N

1000 866 N

1000 433 N

26. Four forces 2P, 3P and 4P act along the sides, taken in order of a square ABCD. The resultant force is

zero

2 ROUTE 2P

2P

ROUTE 5P

27. Two forces of equal magnitude act at an angle 120° to each other. What will be their resultant P

2P

P

2P

2

28. Jet engine works on the principle of

conservation of energy

conservation of linear momentum

Earth's gravity

None of these

29. Young's modulus of elasticity for a perfectly rigid body is

zero

unity

infinity

cannot be known

30. Which of the following concurrent forces cannot have a resultant of 4N

2N and 4N

2N and 6N

2N and 8N

All of these

31. Factor of safety is the ratio of

breaking stress to working stress

endurance limit to yield stress

elastic limit to ultimate stress

ultimate stress to working stress

32. The working surface above the pitch surface of the gear tooth is termed as

Addendum

Dedendum

Face

Flank

33. The height of Watt's governor is proportional to (where N rpm of balls) 11

N

N2

1/N

N2

34. Crowning on pulleys helps

in increasing velocity ratio.

for automatic adjustment of belt so that belt runs centrally.

increase the belt life.

decrease initial tension.

35. For a governor running at constant speed, the force acting on the sleeve is

constant

minimum

maximum

zero

36. For maximum power to be transmitted by the belt, the maximum permissible tension in the belt is

equal to centrifugal tension

twice the centrifugal tension

thrice the centrifugal tension

four-times the centrifugal tension

37. The factor that decides the size of the cam is

prime circle

pitch circle

base circle

pitch curve

38. Sensitiveness of governor is defined as Range of speed Mean speed

Range of speed /Mean speed

Mean speed Range of speed

Mean speed X Range of speed

None of these

39. Cam converts the rotary motion into

rotary motion

translatory motion

both rotary and translatory motions

None of these

40. The creep in a belt drive is due to

material of the pulleys

material of the belt

unequal size of pulleys

unequal tensions and slackness of the belt

41. Backlash in gears is

Addendum Dedendum

Circular pitch Tooth thickness

Space width between two teeth Tooth thickness

None of the above

42. In spur gears

Both shafts are parallel.

Teeth are straight.

Teeth are parallel to axis.

All of these.

43. Angle moved by the cam during which follower remains at its highest position is called

Angle of dwell

Angle of descent

Angle of ascent

Angle of action

44. For a watt governor, what will be the angular speed corresponding to the height of 10 cm, if 10 m/sec2

1 rad/sec

7.29 rad/sec

10.0 rad/sec

3.15 rad/sec

45. The Brinell hardness is calculated by (Where F is load in D is steel ball diameter and d is indentation diameter in millimetres.)

<img src='./qimages/3399-45.jpg'>

46. Piston, piston rod and cross-head of a steam engine constitute

one link

two link

three link

Do not constitute any link.

47. Which of the followings is a higher pair

Belt and pulley

Turning pair

Screw pair

Sliding pair

48. In a compound gear train there is

only one gear on each shaft.

more than one gear on a shaft.

no gear on driving shaft.

None of these

49. For oil-pumps in small IC engines which gears can be used

Spur gears

Crossed helical gears

Gear train

None of these

50. In involute gears, pressure angle is

dependent on size of teeth

dependent on size of gear

zero

always constant

51. The velocity of belt for maximum power is (Where m mass of the belt in kg per metre length. T Tension)

<img src='./qimages/3399-51.jpg'>

52. The size of gear is usually specified by

pressure angle

pitch circle diameter

circular pitch

diametral pitch

53. A cam and follower mechanisms constitutes a/an

open pair

screw pair

closed pair

spherical pair

54. The height of Watt's governor is

directly proportional to speed

directly proportional to (speed)2

inversely proportional to speed

inversely proportional to (speed)2

55. A Portor governor could be classified as

inertia type governor

pendulum type governor

centrifugal governor

dead weight type governor

56. Which one of the following is not a friction clutch

Disc or plate clutch

Cone clutch

Centrifugal clutch

Jaw clutch

57. The maximum fluctuation of energy in a flywheel is equal to

Where
I Mass moment of inertia of the flywheel
E Mean kinetic energy of the flywheel
CS Co-efficient of fluctuation of speed
W Mean angular speed
W1+W2/2

IW

IW2CS

2ECS

All of these

58. The product of circular pitch and diametral pitch is equal to

1

1.57

pie

Infinite

59. Axial thrust is minimum in case of

Spur gear

Bevel gear

Mitre gear

Double helical gear

60. Which of the following brakes is commonly used in motor cars

Band Brake

Shoe Brake

Band and Block Brake

Internal Expanding Shoe Brake

61. Outside diameter of a hollow shaft is twice its inside diameter. Ratio of torque carrying capacity to that of a solid shaft of same outside diameter and same material is

3/4

15/16

1/2

1/16

62. For a shaft transmitting power at rpm the diameter of shaft would be proportional to

<img src='./qimages/3399-62.jpg'>

63. A dead load is one that

remains constant

varies with time

cannot be determined

whose value is zero

64. What is the unit of strain

Centimetre

Millimetre

Micron

None of these

65. Which of the following statements is correct

Stress is proportional to strain.

Stress is force per unit area.

Within elastic limit, the ratio of stress to strain is called Young's modulus.

All of the above

66. Spring index is

Ratio of coil diameter to wire diameter.

Load required to produce unit deflection.

Its capability of storing energy.

None of the above

67. When two springs (each having stiffness constant are connected in series, the equivalent stiffness will be K1

K

2K

k/2

1/k

68. In a beam, the point of contraflexure is a point where

Shear force is maximum.

Shear force is zero.

Bending moment changes its sign.

Bending moment is maximum.

69. Spiral springs are used in

Cycles

Scooters

Watches

Railway Wagons

70. For perfectly elastic body, the value of co-efficient of restitution is

zero

0.5

1

between 0 and 1

71. Hoop stress in thin walled cylinder is

longitudinal tensile stress

radial stress

circumferential tensile stress

compressive stress

72. Slow plastic deformation of metals under a constant stress at high temperature is known as

Fatigue

Plastic deformation

Creep

Endurance

73. The fatigue life of a part can be improved by

Electroplating

Polishing

Coating

Shot peening

74. Flow stress corresponds to

Fluid in motion

Breaking point

Plastic deformation of solids

Rupture stress

75. Moment of inertia of a solid sphere is

(Where M mass of the solid sphere

r radius of the sphere) 22 1

Mr2

Mr2 2/3

Mr2 2/5

Mr2 1/2

76. The above stress-strain diagram is for Ductile material

Brittle material

Soft material

None of these

77. The longitudinal joint of a boiler shell is always a

Lap joint

Butt joint

Lozenge joint

Diamond joint

78. Strain is defined as the ratio of

change in volume to original volume.

change in length to original length.

change in lateral dimension to original lateral dimension.

All of the above

79. Necking phenomenon in stress-strain is observed for

Brittle materials

Ductile materials

Both brittle as well as ductile materials

None of the above

80. Which of the following is more elastic

Rubber

Plastic

Brass

Steel

81. The ratio of moment of inertia of a rectangle and that of a triangle, having same base and height with respect to their bases would be

2:1

3:1

4:1

5:1

82. In case of both the ends fixed of a column, the effective length is

Its own length

Twice its length

Half of its length

None of these

83. The property of a material which enables it to resist fracture due to impact loads is known as

elasticity

endurance

resilience

toughness

84. The bending moment diagram for a cantilever beam carrying concentrated load at end of beam will be a

rectangle

cubic parabola

triangle

parabola

85. The bending moment on a section is maximum where shear force is

maximum

minimum

changing sign

zero

86. When a wire is stretched to double its length, the longitudinal strain produced in it is

0.5

1.0

1.5

2.0

87. The most economical section of a beam to bear maximum bending moment is

square

circular

rectangular

I -section

88. Euler's Buckling theory is applicable for

Short columns

Long columns

Medium long columns

All of these

89. A long column fails by

Crushing

Tension

Shearing

Buckling

90. Slenderness ratio is the ratio of

Maximum size of column to minimum size of column.

Width of column to depth of column.

Effective length of column to least radius of gyration of the column.

Effective length of column to width of column.

91. Which of the following is close to the purest form of Iron

Cast Iron

Wrought Iron

Grey Iron

Mild Steel

92. The percentage of carbon in low carbon steel

1.0%

0.15%

0.87%

0.50%

93. The co-ordination number of face centred cubic structure is

4

8

12

16

94. 18/8 stainless steel contains

18% Nickel, Chromium

18% Chromium, Nickel

18% Tungsten, Nickel

18% Tungsten, Chromium

95. The unique property of cast iron is its high

Malleability

Ductility

Hardness

Damping characteristics

96. Correct sequence of elements of 18 4 1 HSS tool is

Cr, V

Mo, Cr, V

Cr, Ni, C

Cu, Zn, Sn

97. Pure iron is a substance of

Ferrite

Pearlite

Austenite

Ferrite and Cementite

98. Which metal coating is used in the mirror

Lead

Tin

Gold

Brass

99. Which of the following fundamental components of atom is uncharged

Proton

Neutron

Electron

Positron

100. Which tool is used for rapid machining of hard metals

Cemented Carbide

High Speed Steel

Stellites

None of these

101. Purpose of normalizing is to

improve strength

increase hardness

remove internal stresses

None of these

102. Which of the following metals does not have hexagonal close packed structure

Magnesium

Zinc

Cadmium

Copper

103. Which element makes stainless steel corrosion resistant

Vanadium

Chromium

Carbon

Sulphur

104. The process of formation of new grains on heating metals is called

Recrystallization

Oxidation

Micro structure

Hardening

105. Brass is an alloy of

Copper and Zinc

Copper and Tin

Arsenic and Tin

Gold and Tin

106. Which of the following has maximum ductility

Copper

Mild Steel

Cast Iron

18-4-1 Steel

107. Paramagnetic alpha iron changes to gamma iron at following temperature

768 °C

1440 °C

908 °C

1539 °C

108. Eutectoid steel contains following percentage of carbon

0.02

0.30

0.63

0.87

109. The material having same elastic property in all the directions are called

Ideal materials

Uniform materials

Isotropic materials

Practical materials

110. The ability of material to resist softening at higher temperature is known as

Creep

Hot tempering

Hot hardness

Fatigue

111. The slowest cooling rate is achieved when steel is quenched in

fused salt

air

brine

mixture of water and oil

112. Toughness is related to

Moment of inertia

Hardness

Energy absorbed before fracture

Fatigue loading

113. Which among the followings is the most effective strengthening mechanism of non-ferrous materials

Solid solution hardening

Strain hardening

Grain size refinement

Precipitation hardening

114. Which of the following is the an amorphous material

Lead

Brass

Glass

Silver

115. Which of the following is a case hardening process

Carburizing

Nitriding

Cynading

All of these

116. The chisel used for cutting steel sheets is usually

Annealed

Normalised

Hardened

Hardened and Tempered

117. Addition of Nickel to Steel helps in improving

Fatigue resistance

Creep resistance

Corrosion resistance

Cost reduction

118. The machinability of steel can be improved by alloying the steel with

Copper

Chromium

Nickel

Sulphur

119. If T is the recrystallization temperature, the cold working of steel is done at

greater than T °C

equal to T °C

less than T °C

None of these

120. Pure iron at room temperature has following micro structure

gamaa-iron

delta -iron

Cementite

alpha -iron

121. Which of the following materials is not desirable for rivets making

Mild steel

Cast iron

Aluminium

Copper

122. When a nut is tightened by placing a washer below it, the bolt will be subjected to

Tensile stress

Compressive stress

Shear stress

None of these

123. Nichrome is used in

Gas turbine

Air craft engine

Heater element

Brake lining

124. In case of straight turning operation, length of work piece is 120 mm and feed rate is 0.25 mm/sec. How long will it take to complete the turning operation

8 minute

10 minute

12 minute

None of these

125. In leaf springs, the longest leaf is known as

Lower leaf

Master leaf

Upper leaf

None of these

126. The rated life of a bearing varies

Directly with load

Inversely as square of load

Inversely as cube of load

None of these

127. In design of flange coupling, the weakest element should be

Key

Bolt

Flange

Shaft

128. A knuckle pin may fail in

Shear

Bending

Crushing

All of these

129. A cotter joint is used to connect two rods which are in

Tension only

Compression only

Tension and Compression

Shear only

130. Parallel fillet welded joints are designed for

Tensile strength

Compressive strength

Bending strength

Shear strength

131. Initial cost of making a product is 1,00,000 and variable cost per unit is 40. If its selling price is 80 per unit, what would be the break even quantity

2500 units

3500 units

5000 units

7000 units

132. What strength is to be considered for ductile material under cyclic load

Ultimate strength

Yield strength

Endurance strength

Fracture strength

133. The sleeve of Muff coupling is designed as a

Thin cylinder

Thick cylinder

Solid shaft

Hollow shaft

134. The usual proportion for the width of key is (where d is the diameter of the shaft)

d/8

d/6

d/4

d/2

135. What is the function of a washer

Provides cushioning effect

Provides bearing area

Absorbs shocks and vibrations

Provides smooth surface in place of rough surface

136. Anti friction bearings are

hydro-dynamic bearings

sleeve bearings

thin lubricated bearings

ball and roller bearings

137. A key connecting a flange coupling to a shaft is likely to fail in

shear

tension

torsion

bending

138. Piston rod and cross head in a steam engine are usually connected by means of

cotter joint

knuckle joint

ball joint

universal joint

139. In a gib and cotter joint, the gib and cotter are subjected to

single shear only

double shear

single shear and crushing

double shear and crushing

140. A rivet is specified by shank diameter length of rivet type of load None of these

141. A steel bar of 5 m length is heated from 15 °C to 90 °C and is free to expand. The bar will induce Tensile stress No stress Shear stress None of these

142. No. of inversions in a slider crank mechanism is

1

2

4

6

143. Elastic modulus of steel is

70 GPa

210 GPa

250 GPa

300 GPa

144. For proper design of a shaft, it should be designed on the basis of

Maximum principal stress theory

Maximum shear stress theory

Both and

Maximum strain theory

145. Rivets are made of following type of material

Brittle

Low density

Ductile

Low melting point

146. Which theory is best to estimate failure load for a ductile material

Distortion energy theorem

Maximum strain energy theorem

Maximum shear stress theorem

None of these

147. Taylor's tool life equation used to calculate the tool life is given by the equation

TVn constant

VTn constant

VT1/n constant

None of these

148. What is the number of jaws in a self centred chuck of a lathe

Eight

Five

Four

Three

149. Which one is not a part of cotter joint

Socket

Spigot

Fork end

Collar

150. For transmitting power without slip, drive used is

Rope drive

Belt drive

Cone drive

Chain drive

151. Break Even point represents Profit No Profit and No Loss Loss None of these

152. Per cent idle time for men and machine is found by

Work sampling

Time study

Method study

Work study

153. Which of the followings control chart is variable control chart

P-chart

C-chart

U-chart

R-chart

154. Which of the following material handling devices are used for the movement of materials in a fixed route and fixed area of operation

Cranes

Pallets

Industrial Trucks

Elevators

155. In ABC analysis, A-type inventory represents

High value, High volume

High value, Low volume

Low value, Low volume

Low value, High volume

156. According to the definition of "week" under the Factory Act, 1948, it is a period of 7 days beginning at midnight on

Sunday

Monday

Saturday

Friday

157. Standard time is defined as

Normal time allowance

Normal time idle time

Normal time idle time allownace

None of these

158. Which of the followings helps in accident control

Automatic safety guard

Interlock safety guard

Trip safety guard

All of these

159. Which of the followings, leads to industrial hazards and causes accidents

Noise and vibrations

Poor lighting and Poor ventilation

Heat and Humidity

All of these

160. Indian Boiler Act, 1923 is applicable to

all boilers

boilers more than 100 litres capacity

boilers more than 1000 litres capacity

None of the above

161. Which of the following layout is useful when the product being processed is very big, heavy or difficult to move

Fixed position layout

Process layout

Product layout

Cellular layout

162. Work study is mainly aimed at

determining the most efficient method of performing a job.

estimating the minimum time of completion of job.

developing the standard method and standard time for a job.

economizing the motions involved on the part of the work while performing a job.

163. Plant layout used for automobile assembly unit is

Product layout

Process layout

Point layout

Static layout

164. Which of the following safety measures is used to promote the safety

Excessive fine

Writing slogans

Stopping the work

All of these

165. Which of the following is not significant in determination of economic order quantity in inventory control

Ordering cost

Lead time

Inventory carrying cost

All of these

166. Which layout is suitable for multi-product company carring out batch production

Product layout

Process layout

Point layout

All of these

167. The symbol used for transport in work study is

<img src='./qimages/3399-167.jpg'>

168. The chart used in Quality Control is/are

C-chart

R-chart

P-chart

All of these

169. Process layout is employed for

Batch production

Continuous type of production

Effective utilisation of machines

None of these

170. Which of the following has quick return mechanism

Shaper

Drilling machine

Printing press

Milling machine

171. Which of the following production system is characterised by the low production volume

Project Production System

Job Shop Production System

Batch Production System

Mass Production System

172. Basic tool in work study is

Graph paper

Process chart

Planning chart

Stop-watch

173. Quality management standards are controlled by

ISO 7000

ISO 8000

ISO 9000

ISO 14000

174. The word "Kanban" is used in

EOQ

JIT

MRP

SCM

175. Which of the following measuring instrument can't be used to know the value of a dimension

Screw gauge

GO-NO GO gauge

Slip gauge

None of these

176. Interchangeability can be achieved by

standardization

better process planning

simplification

better product planning

177. Bin cards are used for

Machine loading

Stores

Accounts

None of these

178. What does symbol imply in work study

Operation

Inspection

Transport

Permanent Storage

179. Routing is essential in the following type of industry

Assembly industry

Process industry

Job order industry

Mass production industry

180. In inventory control, the economic order quantity is the

Optimum lot size

Highest level of inventory

Capability of plant to produce

None of these