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(Technician Power Electronics System-TPES)' And exam conducted in the year 2023. And Question paper code was '125/2023'. 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 is a current driven device ?
A) BJT 8) IGBT C) JFET D) MOSFET
The short cut for shut down the computer is
A) Alt + F4 B) Ctrl+ S C) Ctrl+ C D) Alt+F5
Which is the primary memory ?
A) Compact disc B) Hard disk
00 ۸ D) Floppy disk
Typical forward voltage drop of red LED is
ھ ۷ 8( 0) ۷ 0) 1.8 ४
The rate of change of output voltage in operational amplifiers is called
A) CMRR B) Slew rate
C) Differential gain D) Common mode gain
DC value of the pulsating output in a half wave rectifier is
A) Vac = 9.45 Voeak 8) ४५८ = 0.318 V,
0( ۷۸۹۸ 1۷ 0) ४७७८ ०.9 ४,
peak
Peak peak
If input AC wave have frequency of 50 Hz applied to fullwave rectifier, the output
frequency of the pulsating DC will be
A) 25 Hz B) 50 Hz C) 75 Hz D) 100 Hz
Peak inverse voltage across the diode in a half wave rectifier with capacitor input
filter is
A) Vin 8( 12۷٥ 0( 2۷۸ 0( ۷۸۳
The type code printed on a zener diode is BZC9V1, ‘B’ stands for
A) Silicon B) Zener
C) Tolerance D) Germanium
Pin number 2 of timer IC 555 is
A) Output B) Ground C) Discharge D) Trigger