Why is the core of the transformer built up of lamination?

a. To reduce eddy current loss
b. For convenience of fabrication
c. No specific advantage
d. For increasing the permeability

Due to which one of the following reasons bearings of PMMC Instrument are made of Jewel?

a. To avoid wear and tear of the moving system
b. To provide a small support
c. It can be easily replaced
d. To make the system robust

The imperfect capacitance which is shunted by a resistance can be measured by which one of the following?

a. Carey Foster bridge
b. Owen bridge
c. Schering bridge
d. Wien bridge

What is a differential transformer?

a. Constant pressure transducer
b. Variable pressure transducer
c. Constant displacement transducer
d. Variable inductance transducer

Schering bridge can be used to measure which one of the following?

a. Q of a coil
b. Inductance and its Q-value
c. Very small resistance
d. Capacitance and its power factor

Inductance is measured by which one of the following?

a. Wien bridge
b. Schering bridge
c. Maxwell bridge
d. Owen bridge

The dielectric loss of a capacitor can be measured by which one of the following?

a. Wien bridge
b. Owen bridge
c. Schering bridge
d. Maxwell bridge

Which bridge is used to determine frequency?

a. Anderson bridge
b. De Sauty bridge
c. Wien bridge
d. Campbell bridge

For low resistance (from few micro ohms to one ohm) measurement, which bridge is used?

a. Wheatstone bridge
b. Kelvin bridge
c. Guarded Wheatstone bridge
d. Maxwell bridge

Which amplifier is used in an electronic multimeter?

a. Power amplifier
b. Buffer amplifier
c. Differential amplifier
d. Wideband amplifier