B.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Aircraft Maintenance Science
BASIC ELECTRICITY
(Upto 2015 batch)
Time 3 Hours Maximum 75 Marks
Part A x 3 15)
Answer any five questions.
1. Define Coulomb and Ampere.
2. Explain about paramagnetic materials.
3. State and explain Ohm's law.
4. Write a short note on Switch and its uses.
5. Briefly explain the working of voltmeter.
6. Explain types of transformers.
7. What is Q factor of a coil?
8. Explain Wattless current.
Part B x 12 60)
Answer all questions.
9. Discuss in detail the types of magnetic materials
and their applications.
Or
Define mutual induction and derive an expression
for mutual induction between two coils.
Sub. Code
13
CP-7809
2
Wk 4
10. State and explain Kirchoff's law with an example.
Or
Discuss in detail
Transformer
Voltage regulator.
11. Describe the construction and working of
multimeter with a neat diagram.
Or
Discuss in detail about DC motor.
12. Discuss in detail about generation of Alternating
voltages and current and its RMs value.
Or
Obtain an expression for current in an AC circuit
containing resistance and inductance as well as
resistance capacitor.
13. Deduce the resonance relation in the series LCR
circuits.
Or
Obtain the expression for power in an AC
circuit containing only resistance and
inductance.
Two coils of inductances 0.5 henry connected
in parallel with one coil of 0.75 h in series.
Determine the equivalent inductance of the
circuit.
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