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 'Tradesman (Electronics andInstrumentation' And exam conducted in the year 2023. And Question paper code was '077/2023'. 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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077/23
Screen of the CRT is coated with
A) Phosphor material B) Crystalline material
C) Thermionic material D) Sulphur material
The least interval between two adjacent discrete details which can be distinguished
one from the other is called
A) Precision B) Sensitivity
C) Resolution D) Fidelity
An ammeter reads 15.34 Amps. The absolute error in the measurement is
—0.11 Amps. Determine the true value of current.
A) 15.23 Amps B) 15.45 Amps
C) 13.94 Amps D) 15.32 Amps
PMWMC stands for
A) Permanent Measuring Moving Coil meter
B) Permanent Magnet Moving Coil meter
C) Phase Measuring Moving Coil meter
D) Phase Magnet Moving Coil meter
Induction wattmeter is used to measure
A) AC power B) DC power
C) Both AC and DC power D) None of these
The deflection in moving coil galvanometer is
A) Inversely proportional to the area of the coil
B) Directly proportional to the number of turns of the coil
C) Inversely proportional to the current flow
D) Directly proportional to the torsional constant
In a CRO, which circuit is provided for synchronising two type of deflections so that
horizontal deflection starts at the same point of the input vertical signal each time it
sweeps.
A) Focusing circuit B) Control circuit
C) Delay circuit D) Trigger circuit