Kerala PSC Previous Years Question Paper & Answer
Page:3
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'ELECTRICAL ENGINEERING' And exam conducted in the year 2015. And Question paper code was '065/2015'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
30.
31.
32.
33.
34:
88.
36.
37.
* 388.
The resistivity of a material is
(a) Ba 0) 3೬
1 a
५ A ह १) Rl
Ra (6) 2
The power factor at the lower power frequency of a RLC series circuit is
(a) 0.5 18881೧8 (0) 0.5 leading
) unity : (ध) 0.707 ٣
A synchronous compensator absorbs inductive reactive power. It is
(a} over excited _ (b) normally excited
(9) under excited (0) none of these (30: 4- 180)
PART 1T
Answer the following questions limited to one paragraph
Explain the conditions for parallel operation of alternators.
What factors govern selection of motor for a drive?
What is the necessity of dc choke coil and freewheeling diode in a converter circuit?
Define string efficiency and mention the methods to improve string efficiency.
Write Mason Gain formulae for signal flow graph.
Explain the factors affected on the resistance of a wire.
Using Routh criterion, determine the stability of the ചടട வ் represented by the
characteristic equation, s*+8s% +18s" +16s45=0. Comment on the location of the
roots of characteristic equation,
Derive swing equation. . ⋅ (8 10 न 80)
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