why field rhoestat is kept in minimum position while armature
rheostat at maximun position?
Answers were Sorted based on User's Feedback
Answer / p.n.gupta
In motors at the time of starting the armature resistance
is introduced to reduce the high starting current and the
field resitance is kept minimum to have high starting
torque.
| Is This Answer Correct ? | 28 Yes | 4 No |
The given answer is correct but here it depends upon the
type of motor that either the motor is series wound or
shunt wound. Because in case of series wound motor the
armature as well as field winding are connected in
series..........But the same is done due to attain high
starting torque.
| Is This Answer Correct ? | 4 Yes | 3 No |
Answer / sivashankar
if suppose armature
resistance is connected
in series wt the
armature the motor
have high voltage.
shunt field resistance
neglected means it
have very starting
torque and sppeds
| Is This Answer Correct ? | 3 Yes | 2 No |
how to calculate power factor of capacitor? what is transformer rating?
what is meant by line voltage and phase voltage in a three phase transformer?
if we want ot select cable size with reference to load current it take than what is the formula and it is same for aluminium or copper?
If UG power cable both ends are to be earthed or what? If not why?
5. What is PMG in Alternators?
write encoder 17 pins details? pin a;b+, pin b;w+,..pin s & t. what is the meaning of b+, w+? explain;
hi frnds can any one help me ? plz send me placement paper of hpcl of Electrical streem .... plz send ....its urgent . The hpcl test is on 17th feb.
how circuit breaker work.. what is the operations taking place inside a circuit breaker when an overcurrent occurs... is it similar to fuse?
what is the function of Choke?
9 Answers Airport Electrical, Cummins, Tamco,
what is relation between motor poles & motor current in 3 phase motor
what should be the no load current for 3 phase ac motors ranging from 5 kw to 1000kw?
How the over load setting for HT Motors calculated-provided in Numerical Relay
0 Answers Damodar Valley Corporation,
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)