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 'Assistant Engineer (Electrical) - Kerala State Electricity Board Ltd' And exam conducted in the year 2023. And Question paper code was '225/2023'. 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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Which of the following type of measuring instrument(s) have linear scale?
0 PMMC
Gi) Moving Iron
(111) Thermocouple
(iv) Rectifier type
۵م Only (ii) (B) Both (i) and (ii)
(0) Both (iii) and (iv) (D) Only ©)
Consider the following statement:
@ The compensating coil of a low power factor wattmeter compensates the effect of the
impedance of the current coil.
(ii) The compensating coil of a low power factor wattmeter compensates the effect of the
impedance of the voltage coil circuit.
(^) (i is true but (ii) is false (B) (i) is false but (ii) is true
(C) Both @) and (ii) are true () 3൦൨൩ ൫ and (11) are false
Vern, Vyn and Vpn are the instantaneous line to neutral voltages and i,, i, and i, are
instantaneous line currents in a balanced three-phase circuit, the computation,
Vrn (i, — i, ) — (Vyn— Ven) i, will yield a quantity proportional to:
(^) Active Power (B) Complex Power
(C) Power Factor (D)_ Reactive Power
A stationary closed Lissajous pattern on an oscilloscope has 5 horizontal tangencies and
1 vertical tangencies for a horizontal input with frequency 3 kHz. The frequency of the
vertical input is:
(A) 15 kHz ®) 06 kHz
(0 81412 0) 180೩
Moving Iron instruments can be used for:
0 AC
Gi) DC
(111) Complex AC
(¢) Only (iii) (9) Only بت
(0) Both (i) and (ii) (D) Only (ii)
225/2023 14 A