what happen when dc shunt motor field is sudden open in
running condition
Answer Posted / menu
For a dc shunt motor if field is suddenly opened, no
current flow so no flux and no magnetic field..so according
to MOTOT PRINCIPLE...conductor experiences torque only if
it is placed in magnetic field...hence the speed of motor
decreases slowly due to inertia and finally it stops.
Is This Answer Correct ? | 11 Yes | 7 No |
Post New Answer View All Answers
As we use capacitor bank in 3ph ckt to improve PF, can we use capacitor in single ph domestric use, in house we have Fan,Mixer,electric cooker,iron,tube choke they also lag the system,because it is inductive load. if it is possible to improve PF of single ph system-- if yes- type of capacitor to be used,connection diagram, working in detail. if no-- list it.
how we can explain arc heatng?
Explain what is rated speed?
What are the types of class b amplifier?
What is a compensator?
how the B-H loop obtain under the static condition
state basic meaning of 'INDUSTIAL AUTOMATION'?
Usage of flywheel diode in relays
1)What is a Triode? What are its uses? 2) What is a Triac? 3) What is a Thyristor?
Why the dc voltage drop during starting of emergency lube oil pump? The Voltage drop from 135kv to 125 kv for one min. before re-establish to 135kv?
how to calculate single phase motor efficiency ?
How to use earthing on shipments.
The gauge indicates the number of amps, but what about voltage? How voltage rating (for wire or fuse) determined?
why ss stablity limit is more transient stablity limit?
when we decide to use soft starter drive or vfd drive in mcc to operate apump?