Permanent magnets used for DC motors because of: – McqOptions

MCQOPTIONS

1.	Permanent magnets used for DC motors because of:
A.	High residual flux density
B.	High coercivity
C.	Both a and b
D.	Retentivity
Answer» D. Retentivity

Discussion

No Comment Found

Related MCQs

When comparing first cost of hydraulic systems to pneumatic systems, generally they are:
DC motors are constructed using:
Assertion (A): Pneumatic actuators are not as messy as hydraulic ones.Reason (R): Pneumatic suffer from leakages and inherent inaccuracies.
The use of feedback element in the feedback loop is:
A one-way valve that lets air into the reservoir of a compressor, but doesn't let it out, is a
Different type of construction in permanent type DC magnet are :
The ____________________ converts the compressed air energy into mechanical energy in the form of linear movement in one direction only.
The major components of a controller are:
Commutation process of a DC motor can be accomplished by solid devices (transistors and SCR's).
When the piston area of the cylinder is connected to the atmosphere, the piston of the single-acting cylinder is pressed by the spring to the ________________