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

What device from the thyristor family has its gate terminal connected to the n-type material near the anode? Select one:

Which of the following bits are used for setting the data frame size?

Ladder logic programming consists primarily of:

Which of the following buses are present in a microcontroller for transferring data from one place to another?

In a bit-mapped I/O system each:

If the gain of the system is reduced to a zero value, the roots of the system in the s-plane:

For either an RC low-pass or high pass filter,

The systematic reduction of logic circuits is accomplished by:

The commutative law of addition and multiplication indicates that:

What are the three terminals of a TRIAC?

The Static Induction Thyristor (SITH) is a:

Which one of the following are correct? The root locus is the path of the roots of the characteristic equation traced out in the s-plane:

The following switching functions are to be implemented using a decoder: f1 = m(1, 2, 4, 8, 10, 14) f2 = m(2, 5, 9, 11) f3 = m(2, 4, 5, 6, 7). The minimum configuration of decoder will be:

Which of the following is not the feature of a modern control system?

How many R-S flip-flops would be required to construct an 8-bit storage register?

What is the name of the random-accessed semiconductor memory IC that must be refreshed periodically to maintain reliable data storage in its memory matrix?

With surface-mount technology (SMT), the devices should:

What is the voltage range considered to be valid logic low input in a TTL device operating at 5 volts?

The Static Induction Thyristor (SITH) has:

What is the difference between a 7400 and a 7411 IC?

When the microcontroller executes some arithmetic operations, then the lag bits of which of the following register are affected?

Which hardware triggers some operation after certain programmed count?

What will happen in that condition, if an interrupt occurs while the microcontroller is serving any other interrupt?

Which among the following is not an advantage of an open loop system?

Consider the loop transfer function K(s+6)/(s+3)(s+5), in the root locus diagram the centroid will be located at:

In AVR, which of the following registers are there for the I/O programming of ports?

In the thyristor gating circuit, the supply to the pulse amplifier is provided by the:

TTL inputs left open develop what logic state?

A differential amplifier has an open-loop voltage gain of 120. The input signals are 2.45 V and 2.35 V. Calculate the output voltage of the Amplifier.

What will be the output from a D flip – flop if the clock is low and D = 0?

A single phase fully controlled bridge converter supplies a load drawing constant and ripple free load current, if the triggering angle is 30 degrees, what will be the input power factor?

A logic circuit that provides a HIGH output if one input or the other input, but not both, is HIGH, is a(n):

The thyristor turn-off requires that the anode current:

Which of the following should a microcontroller at-least should consist of?

If the RC firing circuit used for firing an SCR is to be used to fire a TRIAC then:

In a negative-logic circuit, what level is used to represent a logic 0?

In case of a cosine firing scheme, __________ is used to get a cosine wave

HEMT based __________ have a spot-size convertor with a photodiode.

The Silicon Controlled Switch (SCS) can be turned on by two methods, by applying __________ and __________.

The Static Induction Thyristor (SITH) is a:

The natural reversal of ac supply voltage commutates the SCR in case of:

If the poles or zeros are repeated, then the function is said to be having _________ poles or ________ zeros.

A commutator is a device fitted to a generator. Its function is:

Which network provides the greatest harmonic suppression?

Which characteristic of IC in Digital Circuits represents a function of the switching time of a particular transistor?

From the following list of devices, choose the device that only turns-on or a fixed-value of anode-cathode voltage

What converts the programs written in assembly language into machine instructions?

The APT (automatically programmed tools) language is used with:

Which of the following bit/s of the status register that allows the microcontroller to operate in its low power mode?

The Reverse Conducting Thyristor (RCT) has: