Kerala PSC Previous Years Question Paper & Answer
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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.
D:-Actual rotor speed
Correct Answer:- Option-B
Question58:-The slip of an induction motor will be low when
A:-Rotor Resistance is low
B:-Friction loss is low
C:-Windage loss is low
D:-Rotor resistance is high
Correct Answer:- Option-A
Question59:-The split rings are made of
A:-Brass
B:-Gunmetal
C:-Bronze
D:-Hard drawn copper
Correct Answer:- Option-D
Question60:-Which motor should not be started on no load?
A:-Shunt motor
B:-Cumulative compound motor
C:-Series motor
D:-Differential compound motors
Correct Answer:- Option-C
Question61:-The barrier potential for a silicon PN junction is ۷
A:-0.3 V
D:-0.5 V
Correct Answer:- Option-B
Question62:-In which DC generator the armature and field current will be equal?
A:-Shunt
B:-Long shunt compound
:-Short shunt compound
D:-Series
Correct Answer:- Option-D
Question63:-Which type of starter used to start both shunt and compound DC motor?
A:-Three pointer starter
-Two point starter
C:-DOL starter
D:-Star-delta starter
Correct Answer:- Option-A
Question64:-When the speed of alternator increases the frequency?
A:-Decreases
-Increases
C:-Remains same
D:-None of the above
Correct Answer:- Option-B
Question65:-Alternators are rated in
A:-KW
B:-KWH
C:-KVA
D:-Full load current
Correct Answer:- Option-C
Question66:-Most widely used transformer oil is
A:-Animal oil
-Cooking oil
C:-Vegetable oil
D:-Mineral oil
Correct Answer:- Option-D
Question67:-The line insulators are made up to
A:-Mica
B:-Porcelain clay