Kerala PSC Previous Years Question Paper & Answer

Title : JUNIOR INSTRUCTOR-WIREMAN
Question Code : A

Page:6


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name ' JUNIOR INSTRUCTOR-WIREMAN' And exam conducted in the year 2019. And Question paper code was '004/2019/OL'. 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: 6 out of 11
Excerpt of Question Code: 004/2019/OL

Question48:-Edison screw type lamp holders are used for lamp with wattage range.
A:-above 600 w
B:-upto 200 w
C:-above 200 w below 600 w
D:-above 200 w below 300 w
Correct Answer:- Option-D
Question49:-To increase the ampere hour rating, the cells are to be connected in
A:-parallel
B:-series parallel
C:-parallel series
D:-series
Correct Answer:- Option-A
Question50:-"Don't try to stop a running machine with hands" comes under
A:-General safety
B:-Personal safety
C:-Machine safety
D:-Social safety
Correct Answer:- Option-B
Question51:-The ripple factor of a power supply is a measure of
A:-Its voltage regulation
B:-Diode rating
C:-Its filter efficiency
D:-Purity of power output
Correct Answer:- Option-D
Question52:-The function of a commutator in a DC generator is
A:-To change DC to AC
B:-To collect current from conductors
C:-To change AC to DC
D:-To conduct the current to the brushes
Correct Answer:- Option-C
Question53:-The field coils of a DC generator are usually made of
A:-Carbon
B:-Copper
C:-Cast iron
D:-Graphite
Correct Answer:- Option-B
Question54:-In a two point starters the series resistors is required for
A:-To limit the starting current
B:-Starting the motor
C:-To limit the back emf
D:-To give heavy current at starting
Correct Answer:- Option-A

Question55:-In two watt meter method of measuring three phase power one of the wattmeter shows zero reading what
would be the value of the power factor in this case

ا
:8
‎C:-zero‏
‎D:-1.5‏
‎Correct Answer:- Option-B‏
‎Question56:-Rotor of an induction motor runs always‏
‎A:-At synchronous speed‏
‎-At more than synchronous speed‏
‎C:-At less than synchronous speed‏
‎D:-In opposite direction to the field‏
‎Correct Answer:- Option-C‏
‎Question57:-The difference between the synchronous speed and the actual rotor speed is called‏
‎A:-Fractional slip‏
‎-Slip speed‏
‎C:-Rotor speed‏

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JUNIOR INSTRUCTOR-WIREMAN : Video