Magnetism
Magnetism: Overview
This Topic covers sub-topics such as Transformers, Magnetism, Magnetic Flux, Force on a Current-Carrying Conductor in a Magnetic Field, Magnetic Intensity, Magnetization, Electromagnetic Force, Earth's Magnetism and, Diamagnetic Substances
Important Questions on 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 V power line. If one bulb burns open _____.
Keeping in view the cost and overall effectiveness, the following circuit breaker is suited for capacitor bank switching _____.
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.
Which system is also known as automatic control system?
What do you call the phenomenon whereby substance attracts particle of iron
Brushes are always placed on ______, in order to achieve sparkles commutation?
The power factor of squirrel cage induction motor is _____.
The sequence of induction motor is RYB, then the direction of induction motor can be changed by which of the following sequence?
If the load current and flux of a DC motor are held constant and voltage applied across it armature is increased by , the speed of the motor will _____.
The size of inter pole are small as compared to main poles. What is the reason?
What is the reason for stationary armature essential in alternators above KVA?
The state of sir supplied by a cooling coil with a by pass factor 'X' lies on the psychometric chart at the
A large series motor is never started without some mechanical on it because otherwise it will _____.
Find the number of poles required, when the frequency is 50Hz and speed of the motor is rpm?
An electron enters a region of uniform magnetic field with a certain velocity in the direction of the field. It will move:
