When n resistances each of value r are connected in parallel, then resultant resistance is x. When these n resistances are connected in series, total resistance is

Resistance of a wire is r ohms. The wire is stretched to double its length, then its resistance in ohms is

Kirchhoff's second law is based on law of conservation of

The diameter of the nucleus of an atom is of the order of

The mass of proton is roughly how many times the mass of an electron?

The charge on an electron is known to be 1.6 x 10-19 coulomb. In a circuit the current flowing is

Two bulbs marked 200 watt-250 volts and 100 watt-250 volts are joined in series to 250 volts supply. Power consumed in circuit is

Ampere second could be the unit of

Which of the following is not the same as watt?

Conventional flow assumes charges flow from:

Electron flow assumes charges flow from:

The symbol Q refers to:

The ratio of W/VA in an

AC circuit means:

What is the reciprocal of quality factor?

In liquids and gases,

ionization current results from a flow of:

VL = Vc in a series RLC circuit when:

At what frequency will an inductor of 5mH have the same reactance as a capacitor of 0.1 µF?

Property of an electric circuit that dissipates electric

energy:

What is the other name of relative permittivity?

In a series RLC circuit

The current is ————- times the maximum current at

half-power points of a resonance curve.

What is the specific resistance of a pure germanium?

Kirchhoff’s laws (KCL and KVL) are applicable to:

Which statement is true?

An AC series circuit is composed of a resistance of 20 ohm, inductive reactance of

40 ohm, and a capacitive reactance of 15 ohm. If a current of 1 ampere isflowing, what is the applied voltage?

“ Total electric flux through any closed surface is equal to the charge enclosed by that surface ”. This is

Gauss’s law is applicable for

The potential difference between two points is given by

For forming an electric dipole between two point charges separated by a small distance, the two point charges are of

The amount of

work done in moving a charge from one point to another along an equipotential line or surface charge is

In ac circuit the maximum current required is

The field winding of dc series motor consists of few turns of

The product of rms values of current and voltage is called as

The net power in a series R-C circuit is

The fusing current of a fuse depends on its

In HRC fuses, the space within the body surrounding the element is usually filled with

The expression for total power output of a delta connected system in terms

of phase voltage and current is given by

By using two wattmeter method, power can be measured in

Copper losses is proportional to

A thermal protection switch provides protection against what?

Which circuit breaker is preferred to be installed in extra high voltage AC system?

The rating of the circuit breaker is usually determined on the basis of ____________ fault.

To increase the current sensitivity below 10 mV, electronic instrument uses

Which of the following does not change in a transformer ?

The no-load current drawn by transformer is usually what per cent of the full-load current ?

The path of a magnetic flux in a transformer should have

In the transformer following winding has got more cross-sectional

area

A transformer transforms

Natural oil cooling is used for transformers up to a rating of

(a) 3000 kVA