1. 1.T he sensitivity
of a voltmeter using 0 to 5 mA meter movement is
A) 50 ohm/volt
B) 100 ohm/volt
C) 200 ohm/volt
D) 500 ohm/volt
Ans: D)200 ohm/volt (1/Ifsd =sensitivity )
2.
2.2.Which of the following meter is most suitable
for measuring radio frequency currents?
A)
Moving-coil meter
B)
Moving-iron meter
C)
Thermocouple meter
D)
VTVM
Ans: C) Thermocouple meter.
Audio frequency measurements VTVM by
using rectifier
3.
3.3. At high frequency the accuracy of all the
measuring meters
A)
Increases
B)
Decreases
C)
Remains the same
D)
Depends upon the type of meter
Ans:B) Decreases
4. 4.Megger in its operation in based upon
A)
Moving coil meter
B)
Moving coil meter
C)
Dynamic –meter
D)
Electrostatic meter
Ans: A) Moving coil meter ; It consist
of hand driven generator and a moving coil
meter(two coil windings – pressure coil and current coil )
5.
5.5. Damping provides
A) breaking action
on a meter pointer
B) good accuracy
C) starting torque
on the meter pointer
D) counter torque
to deflection torque
Ans: A) breaking action
on a meter pointer
