AC Bridges - 1 - MCQs with answers

AC Bridges - 1 - MCQs with answers

Q1. AC bridges are used for the measurement of

A. Resistances
B. Resistances and Inductances
C. Inductances and capacitances
D. Resistances, inductances and capacitances

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Q2. The commonly used detectors in ac bridges is/are

A. Head phones
B. Vibration galvanometers
C. Tuned amplifiers, head phones
D. Head phones, tuned amplifiers, vibration galvanometers

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Q3. The vibration galvanometers are sensitive to power for frequency range of

A. 200 Hz and below
B. 200 Hz to about 4 kHz
C. 4 kHz and above
D. Any frequency

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Q4. The vibration galvanometer used as detector, it responds

A. Only to the fundamental frequency
B. Only to the harmonics frequency
C. Both (a) and (b)
D. Does not respond to any frequency

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Q5. The Ac Bridge used for the measurement of inductance
is/are

A. Maxwell’s inductance bridge
B. Hay’s bridge
C. Anderson’s bridge, Owen’s bridge
D. All of these

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Q6. Under balanced condition, the current flowing through the detector is equal to

A. 1 A
B. 0 A
C. Sum of the currents flowing in the adjacent arms
D. Difference between the current flowing in the adjacent arms

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Q7. In Maxwell’s Inductance-Capacitance bridge, the frequency ω

A. Is directly proportional to the inductance in the balanced equation

B. Is inversely proportional to the capacitance in the balanced equation

C. Is directly proportional to the product of inductance and capacitance

D. Does not appear in the balanced equations

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Q8. The Maxwell’s Inductance-Capacitance bridge is not suitable for the measurement inductance of coil if the Q factor is

A. Less than 1
B. Between 1 to 10
C. More than 10
D. Both (a) and (c)

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Q9. The Q meter works on the principle of

A. Series resonance
B. Parallel resonance
C. Both (a) and (b)
D. Neither series resonance nor parallel resonance

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