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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
 
how to decide the ratings of the busbar in electrification.give me the proper thumb rule or procedure ABB 1
I have a 25 KVar capacitor bank at my facility.How to check the capacitor bank ??   2
What is the purpose of earthing Truck ? How does it work for busbar and cables?   1
Why the bypass and blocking diodes are used in solar modules?   1
what is AVR and tell principle and working? ITC-Infotech 8
What is defference between earthed and unearthed cable(HT)? Which is better for under ground cabling?   1
why are transformers rated in KVA and not in KW ABB 7
What is the difference between switch gear and control gear ?   2
We all have seen transmission and Distribution lines In transmission lines the voltage is high and current is low(to reduce I^2r loss) and in distribution lines voltage is low but current is high however the size of transmission wires is bigger than that of distribution wires even though the amount of current carried by the distribution lines is more than that of transmission lines why?   4
To check the earth condition (In plug points); the voltage between earth and Neutral is in below 5 volts. Is it correct   6
Why does not AC excitation use in rotor of AC Generator instead of DC excitation?   2
what is meant by LT & HT? ABB 4
 
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