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 'Demonstrator in Electronics and Instrumentation & Demonstrator in Instrument Technology' And exam conducted in the year 2022. And Question paper code was '129/2022'. 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.
129/22
. Thermocouple is an example for
A) Active transducer B) Passive transducer
C) Photo conductive transducer D) Photo voltatic transducer
. Residual voltage in LVDT is due to
A) Presence of Harmonics in input supply voltage
B) Presence of Harmonics in output voltage
C) Stray magnetic field
D) All of the above
. Gauge factor is highest for
A) Semiconductor strain gauge B) Nichrome
C) Constantan D) Foil gauge
. Piezoelectric transducer is a
A) Active transducer B) Passive transducer
C) Inductive transducer D) Capacitive transducer
. The change in Magnetic property of certain materials when they are mechanically
stressed is known as
A) Doppler effect B) Thomson effect
C) Coriolis effect D) Villari effect
. Very large value of Hall effect emf is observed in
A) Metals B) Bakelete
C) Semiconductors D) Ceramic
. Change in resistivity due to strain is known as
A) Hall effect B) Photo electric effect
C) Piezoelectric effect D) None of the above
. Asensor which is able to detect the presence of nearby objects without any physical
contact is called
A) Proximity sensor B) Active sensor
C) Passive sensor D) Smart sensor
. Ina capacitive transducer the capacitance can be increased by
A) Reducing the distance of separation of parallel plates
B) Reducing the overlapping area of parallel plates
C) Reducing the dielectric constant
D) None of these