Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / poorna
control the speed of the fan by controlling voltage across
armature,(by varing the resistance the drop across the
resistance is changed and hence the voltage available
across armature is varied,). since torque is proportional
to square of voltage for induction motor, developed torque
and speed (as for fan load T prop to square of speed)speed
is changed
| Is This Answer Correct ? | 21 Yes | 1 No |
Post New Answer View All Answers
Why single phase induction motors are not self starting ?
If we impress a dc voltage of 230 V on an unloaded 230 V, 50 Hz transformer it wi A give high secondary voltage B burn out C give secondary voltage as per K D none of these
how to design coil turns ?
Why colled 440V to 3-phase supply.
why using transformer and thyristor switch in 3 phase apfc panel
What are approaches to tackle sedimentation problem of reservoir?
can we use engine degreaser for electrical motors?
WHY BREAKER ARE USED IN SUBSTATIONS?
In MEP Services what are parts of STP and what are there function?
how to calculate the magnetizing current of ct ( 800A/1A) for Relay 64
what is advertised hop count
What are operating procudures & Safety precautions to be observed while operating OLTC in manual mode ?
1.why should we connect the measuring instruments in l.v side in short circuit test of a transformer? 2.why the power factor is less in open circuit test of a transformer?
what type of questions are asked and howmwny questions belong this catagory?
How to dimensioning SDCCH, LAPD and CS7 signaling on GSM?
