Related Questions

Which one of the following is not necessarily the advantage of D.C. motors over A.C. motors?
A Low cost
B Wide speed range
C Stability
D High starting torque
I hope you must have -----by now that failures are the stepping stones to success.
A known
B felt
C decided
D realised
Fill in the gap of the sentence from the following choices: 'I hope you must have_______by now that failures are the stepping stones of success."
A known
B felt
C decided
D realized
High stepping gait occurs due to
A Sensory neuropathy
B Dorsal column leSion
C Motor neuropathy
D Cerebellar lesion
E Parkinson's disease
A stepping motor;
A has a speed proportional to voltage input
B has a commutator
C is a good choice where continuous rotation is needed
D can index positional movement.
E None of the above
The main purpose of providing stepping on the trays is to
A Increase the residence time
B Decrease the pressure drop
C Facilitate handling of large flow rate of liquid
D Improve the flow condition
what is the country of origin of KIA motors?
A South Korea
B Bangladesh Bank
C None
Starters are used with D.C. motors because
A These motors have high starting torque
B These motors are not self-starting
C Back e.m.f. of these motors is zero initially
D To restrict armature current as there is no back e.m.f. while starting
In case of D.C. shunt motors the speed is dependent on back e.m.f. only because
A Back e.m.f. is equal to armature drop
B Armature drop is negligible
C Flux is proportional to armature current
D Flux is practically constant in D.C. shunt motors
A direct on line starter is used: for starting motors
A Up to 5 H.P.
B Up to 10 H.P.
C Up to 15 H.P.
D Up to 20 H.P.

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