When a very small amount of higher conducting metal is added to a conductor, its conductivity will 

An electrically balanced atom has 30 protons in its nucleus and 2 electrons in its outermost shell. The materials made of such atom is

The temperature coefficient of resistance of a doped semiconductor is

In the slice processing of an integrated circuit

Permanent magnet loses the magnetic behaviour when heated because of
1. atomic vibration
2. dipole vibration
3. realignment of dipoles
Which of the above are correct?

A semiconductor differs from a conductor in that it has

Which of the following circuits is used for converting a sine wave into a square wave?

Which of the following elements of electrical engineering cannot be analyzed using Ohm’s law ?

Consider the following statements: A power supply uses bridge rectifier with a capacitor input filter. If one of the diodes is defective, then
1. The dc load voltage will be lower than its expected value
2. Ripple frequency will be lower than its expected value
3. The surge current will increase considerably
Which of the above statements are correct?

Three identical amplifiers each having a voltage gain of 50 are cascaded. The open loop voltage gain of the combined amplifier is

If a square matrix of order 100 has exactly 15 distinct eigenvalues, then the degree of the minimum polynomial is 

For high speed reading and storing of information in a computer, the core shall be of 

Soft magnetic materials should have 

Orbital magnetic moment of an electron, in an atom, is of the order of 

When the temperature of a ferromagnetic material exceeds the Curie temperature, it behaves similar to a 

Assuming both the voltage sources are in phase, the value of R for which maximum power is transferred from circuit A to circuit B is

For the intrinsic gallium-arsenide, the conductivity at room temperature 25°C is 10^-6 (ohm-m)^-1, the electron and hole nobilities are 0.85 m²/V-s and 0.04 m²/V-s respectively. What is the intrinsic carrier concentration at the room temperature?

The resistivity of intrinsic germanium at 30°C is 0.46 –m. What is the intrinsic carrier density at 30°C if the electron mobility is 0.38 m²/V-s and the hole mobility is 0.18 m²/V-s?

Heat conduction in a semiconductor takes place

Brewster angle is the angle when a wave is incident on the surface of a perfect dielectric at which there is no reflected wave and the incident wave is

Resistance switching is normally resorted in case of

By transmitting power at high voltage

Which statement about the daily load curve is valid ?

High voltage Schring bridge is used to measure

Draw - in - system of laying underground cables has the drawback (s) of

What is the primary purpose of Kirchhoff's Current Law (KCL)?

In a circuit with three resistors in series, each of 5 Ω, what is the equivalent resistance?

What is the voltage across a 10 Ω resistor carrying a current of 2 A?

Which analysis technique uses loop currents as variables to solve a circuit?

The Superposition theorem is applicable to:

Thevenin’s theorem converts a complex circuit into:

For maximum power transfer, the load resistance should be:

Norton’s theorem is the dual of:

Millman’s theorem is used to find:

Tellegen’s theorem is based on:

In graph theory, a tree of a network graph contains:

The rank of an incidence matrix for a graph with n nodes is:

A cut-set in a network graph includes:

The tie-set matrix is associated with:

The number of fundamental loops in a graph with b branches, n nodes, and t twigs is:

What is the basis of energy balance in electromechanical systems?

What is the primary coupling field in rotating machines?

What is a condition for electromechanical energy conversion?

How is energy stored in a magnetic field calculated?

What is co-energy in a magnetic system?

How is force derived from stored energy at constant current?

What produces reluctance torque?

What characterizes a singly excited system?

Which machine is an example of a doubly excited system?

What causes transformer EMF?