MCQs with Answers
1. What is the primary function of a voltmeter?
a) Measure current
b) Measure voltage
c) Measure resistance
d) Measure power
Answer: b
2. Which instrument is used to measure frequency?
a) Oscilloscope
b) Frequency counter
c) Multimeter
d) Wattmeter
Answer: b
3. In control systems, what is the transfer function?
a) Input-output relation
b) Time response
c) Stability
d) Frequency response
Answer: a
4. Purpose of a PID controller?
a) Position control
b) Maintain setpoint
c) Filter noise
d) Analog to digital
Answer: b
5. Type of displacement transducer?
a) Thermocouple
b) Strain gauge
c) LVDT
d) Photodiode
Answer: c
6. Main application of Bourdon tube?
a) Temperature
b) Pressure
c) Flow rate
d) Voltage
Answer: b
7. Which amplifies weak signals?
a) Diode
b) Transistor
c) Resistor
d) Capacitor
Answer: b
8. Open-loop gain in op-amp?
a) With feedback
b) Without feedback
c) Specific frequency
d) DC only
Answer: b
9. Binary of decimal 13?
a) 1011
b) 1101
c) 1110
d) 1010
Answer: b
10. A + B Boolean is which gate?
a) AND
b) OR
c) XOR
d) NAND
Answer: b