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 'LABORATORY TECHNICAL ASSISTANT MAINTENANCE AND REPAIRS OF DOMESTIC APPLIANCES VHSE' And exam conducted in the year 2015. And Question paper code was '032/2015'. 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.
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The transformer cores are laminated :
(ക) toreduce hysteresis losses (8) to reduce mechanical losses
)0 to reduce eddy current losses (D) to reduce copper losses
The shaft torque of a de motor is less than the electromagnetic torque because of ©
(ಗಿ) mechanical losses (18) hysteresis losses
(0 eohmic losses )0( stray losses
The collector current of a transistor is always :
(ക) less than emitter current (18) equal to emitter current
(0) greater than emitter current (D) equal to base current
An amplifier can be converted to an oscillator using :
(५) Positive feedback (B) Negative feedback
(C) Zero feedback (D) Null feedback
Damping torque in an indicating instrument is always :
(A) opposite to deflecting torque
(B) in the same direction as the controlling torque
(C) opposite to the direction of motion of the moving system
(D) oppesite to the controlling torque
Moving iron instruments can be used for measuring :
(ಗಿ) direet currents and voltages (B) alternating currents and voltages
(0) radio frequency currents (11) both (A) and (B)
The ண ممه offered by a capacitor to alternating current of frequency 50Hz is 10 ஸ்ப 18
frequency is increased to 100Hz, then the reactance becomes ——————— ohms.
5 بت 20 )4(
© 25 യ 40
The average value of alternating current is :
707۔0 بی ए) 0.637 Im
(ட 0518 (D) 0.41%
11 32/2015
(೪1.೦)
