Time Left - 08:00 mins
SSC JE Magnetic Circuits Quiz 23
Attempt now to get your rank among 664 students!
Question 1
In practical magnetic circuits, the air-gap is kept
Question 2
In an electromagnet, the flux density at saturation should be
Question 3
The hysteresis loop of the core material of a transformer should have
Question 4
What is the magnetic field intensity in a material whose relative permeability is 1 when the flux density is 0.005 T ?
Question 5
How would the loop in Fig. appear for a material with much less retentivity?
Question 6
What is the mean magnetic length of the magnetic circuit shown in Fig.?
Question 7
A magnetising force of 800 AT/m will produce a flux density of in air.
Question 8
A magnetic field of T acts at right angles to a coil of area 100 with 50 turns. The average induced e.m.f. in the coil is 0.1 V when it is removed from the field in s sec. The value of t is
Question 9
A current of 3A flowing in the primary coil is reduced to zero in 0.00 1 s and the induced e.m.f. in the secondary is 15000 V.The mutual inductance between the two coils is
Question 10
When a magnet is moved with its N-pole towards a closed coil, the nearer end of the coil acts as
- 664 attempts
- 4 upvotes
- 6 comments
Jul 3ESE & GATE EE