Electricity and Magnetism

In series RLC circuit what is the power factor just above the resonance frequency?

A magnet placed on plane has a magnetic field of its own around it ,which decreases on magnitude as _____ ?

Three 60 W bulbs are in parallel across the $60$V power line. If one bulb burns open _____.

Resistance of which material does not change with change in temperature ?

Which of the following is not primary type cell?

Types of rotating machines _____.

What is the distinguishing feature of a class C amplifier?

A series circuit consists of $R=20 \Omega$, $L=20mH$, and AC supply $60V$ with $f=100Hz$. The phase angle of current in respect of supply voltage will be ______.

Keeping in view the cost and overall effectiveness, the following circuit breaker is suited for capacitor bank switching _____.

Unbalanced 3 phased stator currents cause _____.

In coal fired thermal power stations, what are the electrostatic precipitators used for?

______ is called the flux density produced within, due to its own induced magnetism.

In synchronous motor the torque is proportional to _____.

Which system is also known as automatic control system?

Cavitations in centrifugal pump likely to occur at the

What do you call the phenomenon whereby substance attracts particle of iron

Generators works on the principle of production _____.

Brushes are always placed on ______, in order to achieve sparkles commutation?

The power factor of squirrel cage induction motor is _____.

Most commonly used material for insulator is