why a three phase induction motor cannot run at synchronous
speed ?
Answer Posted / raul
if the 3 phase induction motor runs at synchronous speed,
then there will be no cutting of flux by the rotor
conductors, hence no induced emf in the rotor conductors n
hence no torque would be produced n finally the motor
stalls at synchronous speed.
| Is This Answer Correct ? | 42 Yes | 20 No |
Post New Answer View All Answers
why swinburnes test cannot be performed on series machines?explain
what is magnetizing current test in power transformer
why ups rating in kva? and why ups are in parellel?.why isolation transformer is used in ups?
how to check avr of dg set of 125kva
Define characteristics impedance?
What are the different sign conventions used in electric circuits?
How to control motor gearbox speed and friquency? If length of cable and dia given, how to measure the voltage drop?
State uses of different types of stsrters with different capacities of motors as below: a. up to 5HP b. above 5hp to 10hp c. above 10hp to 20hp d. above 20hp
why any centrifugal blower draw more current in starting. consider id fan and fd fan?
R=*ΒΆ l/a
give me atleast four differences between circuit and network
How should i design a 1ph & 3 ph transformer. Kindly let meknow all steps and formulaes related to design from scratch.
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?
What is the difference between diode and a transistor in terms of the direction of current flow?
How can i calculate the Breaking capacity of molded case circuit breaker, is the breaking capacity of CB for Diesel generator shall be less than grid supply's breaker ?