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 'DRAFTSMAN POLICE TELECOMMUNICAION UNIT' And exam conducted in the year 2015. And Question paper code was '104/2015'. 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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A voltmeter is accidently connected in series with 100 watts lamp across 240 V supply. What
will be the effect of voltmeter and the bulb ?
(ക The lamp will not glow
(B) The voltmeter will not give correct reading
(C) - The lamp will give partial glow .
(D) The voltmeter will give incorrect reading and the lamp will partially glow
NPN transistors are most commonly used than PNP transistors why ?
(4) NPN transistors have low cost
(B) NPN transistors have higher switching speed
(C) Easy in + ve supply rail
(D) None of the above
When a diode is reverse biased the resistance is :
ക) <100 ohm - (B) >100 ohm
(೮) >100 Mega ohm (D) Infinitive
The material which is not a semi conductor.?
(A) Tantallum (B) Telluruim
(0 Selenium (D) Iodine
In delta connection of three phase :
(ಗಿ) Line voltage = 1.732 times of phase voltage
(B) Line voltage = 3 times of phase voltage
(C) Line voltage and phase voltage are same
(D) Line voltage is 220 volts and phase voltage is 440 volts
The ratio of true power to apparent power denotes :
(ಗ) Form factor (B) Power factor
(ಲ) R.M.S value (D) Average value
Which of the following instrument takes higher power consumption ?
(A) Hot wire instrument (3) Moving coil instrument
(C) Moving iron instrument (D) Integrating type instrument
11 104/2015
[P.T.0.]
