Kerala PSC Previous Years Question Paper & Answer
Page:10
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Instrument Mechanic' And exam conducted in the year 2023. And Question paper code was '158/2023/OL'. Medium of question paper was in Malayalam or English . Booklet Alphacode was ''. 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.
Question48:-The calculation of rejection by the Op-Amp of unwanted input signals
common to both input leads is called :
A:-CMRR
B:-Gain
C:-Slew rate
D:-Integration
Correct Answer:- Option-A
Question49:-ldeal Op-Amp will have the following characteristics
1. Voltage gain Av=1
Il. Bandwidth BW = ०
Ill Input resistance Rin = ०
A:-Only | and Il are True
B:-Only II and III are True
C:-Only | and Ill are True
D:-All three are true
Correct Answer:- Option-B
Question50:-The reference voltages at Threshold and Trigger comparators of 555
timer respectively are:
A:-2/3 Vcc and 1/3 Vcc
B:-1/3 Vcc and 2/3 Vcc
C:-1/2 Vec and 3/2 Vcc
D:-3/2 Vcc and 1/2 Vcc
Correct Answer:- Option-A
Question51:-In measurement system, which of the following are undesirable static
characteristics:
A:-Sensitivity and drift
B:-Static error and accuracy
C:-Drift, Static error and dead zone
D:-Reproducibility
Correct Answer:- Option-C
Question52:-Precision is the
A:-Degree of exactness
B:-Closeness of agreement among a number of consecutive measurements
C:-Ability to respond to true value of a measured variable
D:-None of the above
Correct Answer:- Option-A
Question53:-What is the name of instrument used to detect and record earthquake?
A:-Seismograph