Speed control of a universal motor is achieved by – McqOptions

MCQOPTIONS

1.	Speed control of a universal motor is achieved by
A.	Varying field flux with tapped field windings
B.	Connecting rheostat in series
C.	Applying variable voltage by means of silicon controlled rectifier
D.	All of the above methods
Answer» E.

Discussion

No Comment Found

Related MCQs

Starting winding of a single phase motor of a refrigerator is disconnected from thecircuit by means of a
If a particular application needs high speed and high starting torque, then which of thefollowing motor will be preferred ?
In a capacitor start and run motors the function of the running capacitor in series withthe auxiliary winding is to
In split-phase motor iauxiliary winding is of
Two-value capacitor motor finds increased application as compressor motor in smallhome air-conditioners because
A capacitor-start single phase induction motor is switched on to supply with itscapacitor replaced by an inductor of equivalent reactance value. It will
Centrifugal switch disconnects the auxiliary winding of the motor at about ____percent of synchronous speed
As hysteresis motors are free from mechanical and magnetic vibrations thereforethese are considered as suitable for
Hysteresis motor is particularly useful for high-quality record players and tape- recorders because
Which of the following single-phase induction motors is generally used in timephonographs ?