UP polytechnic Lecturer (EE) Quiz 33

Damping used in hot wire instrument is

For the tank circuit shown below, the time period of oscillation is

Determine the equivalent inductance between the two terminals x and y for given coupled circuit.

A magnetic field is set up by a solenoid would on an iron bar. The direction of the field produce by the current is given by

In which transformer, bar primary is used?

Consider the following sentence regarding lead compensator

1) it behave like high pass filter

2) it increases the value of damping ratio

3) it does not affect steady state response

Which of the following is true

A 1-φ, 230 V energy meter has a meter constant of 400 rev/kWh. Find % error, if the shunt coil flux lags applied voltage by 88° at 0.8 PF lag.

The KVA rating at which maximum efficiency of 1000 KVA transformer occurs is _______KVA. (Take iron loss 1000 W and full load copper loss 2000 W).

Statement 1: Static magnetic field is conservative in nature.

Statement 2: For static magnetic field,

Consider the following statements:

(1) A low pass circuit can be an integrator circuit.

(2) A high pass circuit can be a differentiator.

Which of the above statements is/are correct?