If a resistance to which a constant voltage is applied is halved, what power dissipation will result?

If the reference point is changed to the earth point then any voltage taken w.r.t. the earth is known as

Two ac sources feed a common variable resistive load as shown in figure. Under the maximum power transfer condition, what is the power absorbed by the load resistance RL?

In a parallel circuit, the individual branch currents are

When a material becomes a superconductor, its resistivity becomes

Delta to wye or wye to delta transformation technique is applied to a ______ network.

A straight conductor 500 mm long is moved with constant velocity at right angles both to its length and to a uniform magnetic field. Given that the e.m.f. induced in the conductor is 2.5 V and the velocity is 5 m/s, calculate the flux density of the magnetic field. If the conductor forms part of a closed circuit of total resistance 5 ohms, calculate the force on the conductor.

A current of 6 A flows for 10 minutes. What charge is transferred?

The magnetic field due to a current-carrying conductor takes form of:

Voltage drop is the:

The effect on an air gap in a magnetic circuit is to:

A strong permanent magnet is plunged into a coil and left in the coil. What is the effect produced on the coil after a short time?

An RLC series circuit is underdamped. To make it overdamped, the value of R

The drift velocity of electrons is

Calculate the resistivity of ntype semiconductor from the following data, Density of holes = 5 x 1012 cm-3. Density of electrons = 8 x 1013 cm-3, mobility of conduction electron = 2.3 x 104 cm2/ V-sec and mobility of holes = 100 cm2/V-sec

Assertion (A): Two transistors one n-p-n and the other p-n-p are identical in all respects (doping, construction, shape, size). The np-n transistor will have better frequency response. Reason (R): The electron mobility is higher than hole mobility.

From the given circuit below, we can conclude that.

In an ideal op-amp, which is not true?

What is the use of the compensation capacitor in op-amp?

In a low pass filter as below, find the cut-off frequency for the following circuit.

Ripple factor of bridge full wave rectifier is _________.

If peak voltage on a bridge full wave rectifier circuit is 5V and diode cut-in voltage is 0.7, then peak inverse voltage on diode will be _________.

For a base current of 10 μA, what is the value of collector current in common emitter if βdc = 100

Which of the following oscillators is suitable for frequencies in the range of megahertz?

Figure is a 24 Vr stabilized power supply. The zener is 24 V, 600 mW. The minimum zener current is 10 mA. Proper values R and maximum load current are

In a class C power amplifier the input signal has a frequency of 250kHz. If the collector current pulses are 0.1 μs wide, the duty cycle of current waveform is

In figure, voltage across R2 = + 10 V. If VBE = 0.7 V and VE = 0.7 V and RE = 10 kΩ, current through RE is

The main advantage of CMOS circuit is

Assertion (A): In design of circuit using BJT, a derating factor is used. Reason (R): As the ambient temperature increases, heat dissipation becomes slower.

As temperature increases the number of free electrons and holes in an intrinsic semiconductor

A conductor is said to have resistance of one ohm if a potential difference of one volt across its terminals causes a current of X ampere to flow through it. What will be the value of X?

A 25 Ω resistor has a voltage of 150 sin377 t. Find the corresponding power.

According to Kirchhoff’s voltage law, the algebraic sum of all IR drops and e.m.f. in any closed loop of a network is always.

The concept on which Superposition theorem is based is.

If the load in the given circuit is 120 k-ohms, what is the loaded output voltage?

With 21 V applied, if R1 = 5 ohms, R2 = 35 ohms, and R3 = 14 ohms, what is the current of R2 if R1 is series connected with parallel circuit R2 and R3?

What is the total resistance of a circuit when R1 (7 k ) is in series with a parallel combination of R2 (20 k ), R3 (36 k ), and R4 (45 k )?

What is the total resistance?

If doubling the voltage across a resistor doubles the current through the resistor then

What is the power in the given circuit?

If voltage across a resistance doubles.

Intrinsic semiconductor material is characterized by a valence shell of how many electrons?

What causes the depletion region?

What can a semiconductor sense?

The primary function of the bias circuit is to

A JFET is a ______.

D-MOSFETs are sometimes used in series to construct a cascode highfrequency amplifier to overcome the loss of:

When an input signal reduces the channel size, the process is called:

Two capacitors of 1 μF and 2 μF capacitance are connected in parallel across a 30 V dc battery. After the capacitors have been charged, the charges across the two capacitors will be.

If the diameter of a wire is doubled, the current carrying capacity of the wire becomes