# Introduction of Bridges

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

1. A bridge circuit is used for the measurement of which of the following components?
a) Resistance, capacitance, and inductance
b) Diode, triode, and thyristor
c) Transistor, thermistor, and antenna
d) LED, op amp, and transducer

2. A simple bridge circuit consists of a network of __________
a) 3 resistance arms
b) 2 resistance arms
c) 4 resistance arms
d) 6 resistance arms

3. What is applied to the two opposite junctions of a bridge circuit?
a) source of voltage
b) source of current
c) source of power
d) source of impedance

4. A bridge circuit uses which method of measurement?
a) absolute
b) relative
c) differential
d) comparison

5. Which principle operates a bridge circuit?
a) null indication
b) ampere’s rule
c) partial indication
d) kirchhoff’s laws

6. The accuracy of a bridge depends on the _________
a) null indicator
b) bridge components
c) current source
d) voltage source

7. When is the bridge circuit balanced?
a) When voltage is applied
b) When current flows through the opposite ends of the bridge circuit
c) When no current flows through the galvanometer
d) When impedance is minimum

8. Relationship at balance condition between the component values of the four arms of a bridge is known as _________
b) open circuit condition
c) short circuit condition
d) balancing condition

9. D.C. bridges are used for _________
a) measurement of resistance
b) measurement of capacitance
c) measurement of current
d) measurement of inductance

10. What is used to characterize single port devices, multiport devices, etc?
a) current values
b) impedance values
c) voltage values
d) power values