if dc motor can operate by ac supply ? if its possible
means how ?
- 2 Answers
- 6208 Views
- I also Faced
- E-Mail Answers
Answer Posted / rahul ganthade
It depends on whether the field winding of the dc motor is
connected in series or in shunt with the armature
winding.If it is connected in series,the motor will rotate
since the torque,which varies as the product of the
armature and field current is always positive.Thus,a
positive average torque causes the motor to rotate,however
the pulsating nature may cause the commutator segments and
brushes to wear out.
Thus only small sized dc motors may be used with ac supply.
| Is This Answer Correct ? | 2 Yes | 0 No |
Post New Answer View All Answers
What is the purpose of stablization resistor in high impedance bus bar protection
When calculating the speed of a rotor required for a particular frequency of synchronous generator we use the equation 60f/p Is this p is the number of pole pairs of rotor & do we consider the number of pole pairs in the stator is 1?
From what on-site components does the HT panel monitoring the bus-bars in a 11kV system take inputs?
model question paper for supervisor trainee
how ct burden,magnetising current,ratio and knee point voltage are related & derived
How to calculate size of HT breaker with the help of Amp (current)? Please provide answers with examples.
if we look on phasor of the transformer vaoltage is 180 oppsite at primary and the secondary so to improve a power factor is secondary should kept negative to improve it primary side means is -.90 became +.90 at other side
What is ST and specify its range of voltage.
What is the physical significant of power factor?
I am using submission of two ct in one and half scheme for 67/67N protection. Both CTs star point is grounded separately near ct box.Will two point ground give wrong tripping to 67/67N during fault or no matter.
what are the difference between AC lamp and DC lamp
Differentiate between digital phase converter and ordinary phase converter.
2 v/500amp/hr to 1.80vpc at 20 degree celsious 2v/5ooamp/hr to 1.75 vpc at 77degree farren .this is the capacity of a battery .what is the meaning of this . can i get a detailed explenation
State angle criterion.
Define the three phase formula fuse.
