Tesla is a unit of
Select an option to see the answer and solution.
Electrical Engineering · all questionsMagnetism And Electromagnetism
Magnetism And Electromagnetism
practice.
Practice every MCQ with options. Use Show answers when you want the correct option and solution.
92
Questions
5/5
Page
Pick an option on a question to see the right answer and solution.
The bar magnet has
Select an option to see the answer and solution.
The electromagnet has 50 turns and a current of 1A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength?
Select an option to see the answer and solution.
If a copper disc is rotated rapidly below a freely suspended magnetic needle, the magnetic needle shall start rotating with a velocity
Select an option to see the answer and solution.
The unit of relative permeability is
Select an option to see the answer and solution.
A 200 turn coil having an axial length of 30 mm and a radius of 10 mm is pivoted in a magnetic field having a flux density of 0.8 T. If the coil carries a current of 0.5 A, the torque acting on the coil will be
[Hint. Torque = 2BIlNr N-m]
[Hint. Torque = 2BIlNr N-m]
Select an option to see the answer and solution.
The working of a meter is based on the use of a permanent magnet. In order to protect the meter functioning from stray magnetic fields
Select an option to see the answer and solution.
The initial permeability of an iron rod is
Select an option to see the answer and solution.
Unit for quantity of electricity is
Select an option to see the answer and solution.
The main constituent of permalloy is
Select an option to see the answer and solution.
The attraction capacity of electromagnet will increase if the
Select an option to see the answer and solution.
Which of the following is expected to have the maximum permeability ?
Select an option to see the answer and solution.