Qmeter

Electrical Measurements

This set of Electrical Measurements & Measuring Instruments Multiple Choice Questions & Answers (MCQs) focuses on “Qmeter”.

1. Q factor is called __________
a) Quality factor
b) Quantity factor
c) Queen factor
d) Quarter factor

2. Q factor is also defined as the ratio of _______
a) resistance to reactance
b) reactance to resistance
c) power to voltage
d) current to power

3. What is a Q meter?
a) quality meter
b) quantity meter
c) instrument
d) detector

4. Q meter works on the principle of _______
a) barkhausen criterion
b) piezoelectric effect
c) parallel resonance
d) series resonance

5. Q factor for a series resonant circuit is?
a) Q = XLR=XCR
b) Q = XL R = XC R
c) Q = RXL=RXC
d) Q = 1R

6. What is the relation between Q factor and voltage?
a) Q = 1E
b) Q = XLR=XCR=ECE
c) Q = E
d) Q = RXL=RXC=EEC

7. A practical Q meter consists of __________
a) Wien bridge oscillator
b) AF oscillator
c) RF oscillator
d) Crystal oscillator

8. Voltage across the shunt is measured by ________
a) voltmeter
b) multimeter
c) thermocouple
d) thermometer

9. Inductance of the coil is ________
a) L = 1(2πf)C
b) L = 1(2πf)2
c) L = 1C
d) L = 1(2πf)2C

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