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 COMPUTER HARDWARE AND NETWORK MAINTENANCE English' And exam conducted in the year 2019. And Question paper code was '003/2019'. 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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An electric heater draws 3.5 A from a 110 V source. The resistance of the heating element is
approximately :
(A) 385 Ohms (B) 38.5 ೦೧೫೬ (C) 3.1 Ohms (D) 31 Ohms
Thevenin resistance is found by :
(ക) Shorting all voltage sources and opening all current sources
(8) Opening all current sources
(C) Shorting all voltage sources
(D) Opening all voltage sources and shorting all current sources
Mutual flux at the lagging loading and it at the leading power
factor.
(A) Decreases, increases (B) Increases, increases
(C) Decreases, decreases (D) Increases, decreases
Eddy currents are induced in the pole shoes of a DC machine due to :
(ക) Oascillating magnetic field
(B) Pulsating magnetic flux
(ಲ) Relative rotation between field and armature
(D) All of the above
Convert 1E2;; to decimal :
(A) 480 (8) 482 (८) 483 (D) 484
Which of the following is not true ?
(வ) 0+A=A (8) 1+A=1 (©) A+A=A യു 1.A=1
A positive AND gate is also a negative :
(A) NAND gate (B) NOR gate (ಲ) AND gate (D) OR gate
As compared to MOS memories, bipolar memories have :
(A) Faster access time and are costly
(8) Slower access time and are costly
(C) Faster access time and are cheaper
(D) Slower success time but are cheaper
The output ட of a J-K flip-flop is zero. It changes to 1 when a clock pulse is applied. The
input J, and K, are respectively.
(A) land X (B) Oand X (0 ೫೫೫೩0 (0) ೫೫೧41
03/2019 6 A
