# Terms, Definitions, MCQs and Free Templates

## Practice and Learn everything. Definitions, MCQs, Tutorials, Solutions and Create your own Free Templates

The superposition theorem is applicable to

In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will

The relation between the apparent power, actual power and reactive power is given by

The units for electric dipole moment are

The time constant of the capacitance circuit is defined as the time during which voltage

In a loss-free R-L-C circuit the transient current is

In a series R-L-C circuit at the resonant frequency the

The time constant of a series R-C circuit is given by

If resistance is 20 Ω and inductance is 2 H in a R-L series circuit, then time constant of this will be

At very low frequencies a series R-C circuit behaves as almost purely __________ .

The voltage in a circuit follows the law v = 100 sin ωt if the frequency is 25 Hz, how long will it take for the voltage to rise to 50 volts?

Which of the following expressions is true for apparent power in an A.C. circuit?

For 200V r.m.s. value triangular wave, the peak voltage will be

A sine wave of voltage varies from zero to maximum of 200V. How much is the voltage at the instant of 30° of the cycle?

How much r.m.s. current does a 300 W, 200 V bulb take from the 200V, 50 Hz power line?

The phase difference between them is __________ degrees.

The r.m.s. value of a half-wave rectified current is 100 A. Its value for full-wave rectification would be __________ amperes.

Poor power factor

In a highly capacitive circuit the

Power factor of the following circuit will be unity

A capacitor behave to d.c. as

The scale factor for half wave and full wave rectifier is __________ respectively.

In an idealized half wave rectified system the average and r.m.s. values of voltage are __________ respectively.

The value of current at resonance in series R-L-C circuit is affected by the value of

In a R-L-C circuit at resonance is

An electrical network with 8 independent nodes will have __________ nodal equations.

In a circuit containing a complex impedance, maximum power transfer takes place when load is

Form factor for a sine wave is

Which of the following statements is correct?

Which of the following frequencies has the greatest period?

A series resonant circuit is capacitive at f = 150 Hz. The circuit will be inductive somewhere at

As regards dielectric constant εr

In one time constant, the current in a circuit reaches __________ percent of its final value.

Millman’s theorem is the best to find

The series element in band pass filter is

The dual of a loop is

The series element of a band stop filter is

The dual of a link is

The series element for a prototype high pass filter is

If f1 and f2 and half-power frequency and f0 be resonant frequency, the selectivity of R-L-C series circuit is given by