Kerala PSC Previous Years Question Paper & Answer

Title : Industries Extension Officer Industries And Commerce English
Question Code : A


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Industries Extension Officer Industries And Commerce English ' And exam conducted in the year 2019. And Question paper code was '067/2019'. 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.

page: 7 out of 14
Excerpt of Question Code: 067/2019











The input voltage, current and power 0 8 balanced 3-phase system is measured as 415 V,
16.4 A and 6 kW respectively. The power factor of the system is approximately :

@ 1 B) 8
© 0.9 (0) 05
This among the following is not a renewable source of energy :
(മ Hydro-power (3) Solar energy
{C) Biomass energy (D) Geothermal energy
A fuel cell, in order to produce electricity, burns :
{A) Carbon {B) Hydrogen
{C) Nitrogen (D) Helium
The most nuclear fuel used in the world 15 :
(മ Thorium-232 {B) Uranium-238
(0) Uranium-285 (D) Plutonium-23%
If the supply frequency to the transformer is increased, the iron loss will :
(മ Not change {B) Decreases
(0) Increase {D) Any of the above
The transformer ratings are usually expressed in :
(മ Volts 0) Amperes
டண்‌ D) kVA
Buchholz’s relay gives warning and protection against :
(മ Fault inside transformer {B) Fault outside transformer
{C) For both outside and inside (2) None of the above
The ratio of starting torque to full load torque is least in :
(4) Shunt motor (B) Series motor
(© Differential compound motor യു Cumulative compound motor

Salient poles alternators are generally used on :
(¢) Low speed prime movers only
(® High speed prime movers only
(0 Medium speed prime movers only
(2) Low and medium speed prime movers

The main disadvantage of using short-pitch winding in alternators is that it :
(മ Reduces harmonics in the generated voltage
{B) Reduces the total voltage around the armature coils
{C) Produces asymmetry in the three phase windings
(2) Increases Cu of end connections

9 67/2019

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