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 'Workshop Instructor/ Instructor Gr. II/ Demonstrator in Electronics Engineering' And exam conducted in the year 2023. And Question paper code was '068/2023'. 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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068/23
Which of the following statement is not correct with IC741 ?
A) Infinite voltage gain B) Zero input impedance
C) Zero output impedance D) Infinite bandwidth
An operational amplifier is labelled as LM741. The manufacturer’s designation of
the given IC is
A) Motorola B) Texas instruments
C) National semiconductor D) RCA
If a capacitor is placed in the feedback path of an op-amp circuit, then the circuit
act as
A) Differentiator B) Schmitt Trigger
C) Comparator D) Integrator
If Any = 3500 and Agy = 0.35, the CMRR is
A) 1000 B) 1001
C) 10000 D) 101
The common mode voltage gain of a differential amplifier is equal to RC divided by
A) re B) 2re
௦) 7௪2 D) 2RE
An operational amplifier with a gain of —10 and input resistance (R;) equal to 10 kQ,
the feedback resistance (R;) is
A) 100 kQ B) -10 kQ
C) -1 kQ D) 10 kQ
In which state the PLL tracks any change in input frequency is at
A) Capture Range B) Pull-in-time
C) Hysteresis D) Locked Range
Which of the following statement is correct for 555 IC timers ?
i. It operates in single mode
ii. It operates in two modes
iii. It operates in three modes
iv. It operates in four modes
A) Only ii and iii 8) Only iii
C) Only iv D) Only i and iv