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Question
what is a universal motor? how it works?
 Question Submitted By :: Electrical-Engineering
I also faced this Question!!     Answer Posted By  
 
Answer
# 1
Universal motor is a motor, it can run both AC & DC Supply,
it operate with three kind topology.
1. AC drive with TRIAC,
2. DC drive with Traic,
3. DC drive with IGBT,
 
Is This Answer Correct ?    21 Yes 5 No
Rajilatha
 
Answer
# 2
Universal motor is a motor, it can run both AC & DC Supply,
it contence carbon bruses, example of motor is we use at
home mixer cum grinder.
 
Is This Answer Correct ?    17 Yes 1 No
Anil Bhatia
 
 
 
Answer
# 3
universal motor is a AC series motor .. it has capability to
work for both as and dc supply .
it can rotate with very high speed nearly 3600 RPM to 25000
rpm. Its the only motor which is having high range of speed
the main applications of this motors are
electric shavers,electric hand drillers.office machines
etc
these motors are avilable from the range 1/4 HP to 3/4 HP
 
Is This Answer Correct ?    7 Yes 5 No
Venkatesh Naik
 
Answer
# 4
Its a motor is work in both DC and ACsupply. 
Is This Answer Correct ?    4 Yes 2 No
Boopathi
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
circuit breaker work alone during fault condition or need any relays ?   4
how to calculate the current carrying capacity of a conductor. How it is related to diameter of cable or conductor BARC 3
Why 66KV is step down to 11KV and then 433v, not directly 66KV to 433v ?   2
It is being often experienced that due to single phasing fault of any source transmission line of any closed loop synchronized circuit all the power transformers with primary stared trips but the power transformer with primary delta wont, why ? Mseb 1
What is the difference between Contactor and Circuit breaker ?   7
Whats the principle of lightning? How protection against lightning is achieved? Types of protection? How to select the height of lightning spike? as per the area. HAL 4
What is In (current rating) shown on the MCCB? Is this full load which can withstand by the circuit breaker   4
why an ideal voltage source has low internal resistance????   1
they conducted technica for 1 hour..i also managed..they selected 5 boys and only one girl,myself got wait listed.whether they would call or not MAHINDRA 2
Differentiate between Low and High impedance Protection   1
What do you mean by creepage distance? Amara-Raja 4
For a load of 40HP induction motor.what will be size of Armoured copper cable require to connect the motor to starter in Star-Delta? CG 1
 
For more Electrical Engineering Interview Questions Click Here 
 
 
 
 
 


   
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