Explore topic-wise MCQs in Engineering.

Wirewound resistors are usually used in circuits that have:

How is power dissipated in a resistor?

Resistance in a circuit is:

If a calculator display was "0.00263," what would this answer be in percent?

A 33 k resistor with a 20% tolerance checks out as ok with which of the following ohmmeter readings?

For P = V²/R, a decrease in resistance should produce:

The unit designator for resistance value is the:

The word work means that:

A good fuse will have:

What property does an incandescent lamp possess?

If resistance decreases, then current will:

One advantage of a carbon film resistor over a carbon composition resistor is:

Which type of test equipment is used to measure resistors?

Resistance is:

Electrical equipment is protected against excessive current by a(n):

A wire with a smaller cross-sectional area will produce:

How many connections does a rheostat have?

What are the parts of a rheostat?

___ occurs in a transformer when some of the primary flux lines pass through the air instead of the core.

A step-up transformer will ___ to the secondary.

Phase angle is the difference in phase between the applied voltage (VS) and the circuit current (I_T).

If a 7.5 k resistance is connected to a 10 k inductive reactance in a series RL circuit, then the impedance equals 12.5 k .

In a series RL circuit, a power factor of 0.5 results in less energy conversion to heat than does a power factor of 0.6.

If Y = 20 mS, then Z = 20.

The current lags the source voltage in a series RL circuit.

The given circuit is a _______.

The phase angle will decrease in a series RL circuit if the inductance is increased.

The voltage dropped across the resistor in the circuit in the given circuit is approximately equal to ___.

As frequency decreases in a parallel RL circuit the impedance also decreases.

The cutoff frequency of the circuit in the given circuit is approximately equal to _____.

All the schematic symbols shown in the given figure are variable inductors.

An RL filter could be a high-pass or a low-pass filter.

Maximum power will transfer across a transformer when the primary impedance equals the secondary impedance.

Increasing the inductance value in an ac inductive circuit will lower the circuit current.

Self-inductance is the property that causes an electromotive force to be produced in a conductor.

X_L = 2fL

The primary and secondary are in phase.

An ideal inductor would not dissipate any energy.

Five time constants are required for current in an inductor to reach a maximum value.

The quality factor of an inductor is the ratio of inductive reactance to the winding resistance of the coil.

In a dc circuit, the only conversion of energy to heat is in the inductance of the coil itself.

If the resistance is larger than the inductive reactance in the given circuit, the phase angle is _______.

The phase angle in the circuit in the given circuit is approximately equal to ______.

If V_S increases in the given circuit, then the _____.

In the given circuit, I_T equals _____.

As the frequency increases in a series RL circuit the impedance also increases.

The impedance of the circuit in the given circuit is 110 .

For series ac circuits containing both resistance and inductive reactance, total opposition to current can be found by simply adding ohmic values or oppositions to current.

The frequency at which X_L = R in an RL circuit is called the _______________.

The phase angle will increase in a parallel RL circuit if the resistance is increased.