Kerala PSC Previous Years Question Paper & Answer
Page:4
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'DEPUTY ENGINEER GENERAL AND SOCIETY CATEGORY KERALA CO OPERATIVE MILK MARKETING FEDERATION LTD' And exam conducted in the year 2015. And Question paper code was '085/2015'. 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.
23. = power electronic switch used for a Sine-PWM inverter can be :
لم एक (B) TRIAC
(ಲ) IGBT (0) All of these
24. Which of the following statement is correct for a common base transistor amplifier?
(^) High current gain and high output impedance
(18) Low input impedance and high output impedance
(ര High input impedance and low output impedance
1) High voltage gain and low output impedance
25. 1 common base current gain @ =0.99, Iy, ൦ 8/4, 7 550 444 for a bipolar transistor, then
value or collector current 10 ೪೫11106 :
(५) 8.5 ००4 ॥ 45mA
യ 50mA @ 3.5 ०५
26. A second order RLC series circuit behaves like an inductive circuit :
(ಯಿ) At resonant frequency
(B) Below resonant frequency
(2) Above resonant frequency
(D) At lower half power frequency
27. 3- phase transformer combinations which cannot be operated in parallel are :
(A) Star- star & delta- delta
(B) Star-delta & delta-star
(2 Star-star & star-delta
(1) Delta-delta & star-star
28. Mho relay is normally used for the protection of :
(है) Long transmission line
(B) Short transmission line
(C) Transformer
(D) DC motors
29. A1 mA d Arsonval ammeter has resistance of 100 ohm. The value of the series resistance
required to convert it to a (0—50) V Voltmeter is :
(५) 11५ © 499k Q
م) 19k 0 D) 108೧
85/2015 6 A
