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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
 
10. THE MOST COMMON TYPE OF THREE PHASE IN UNSYMMETRICAL FAULTS IS ........ SSC 6
WHAT IS A BASIC DIFFERENCE BETWEEN THYRISTOR,TRIAC AND A DIAC.AND WHAT R THERE APPLICATIONS? TCS 5
When geneartor is running in poor lagging side power factor its excitation current increases then it is running in improved lagging side.Kindly tell me when gen is running in leading side what will happen   3
how to select a breaker (MCB,MCCB,ELCB) for 18.5 kw, 3 ph. 480 v, 60 hz induction motor?   4
low voltage means how much voltage? extra low voltage means how much voltage? medium voltage means hos much voltage? high voltage means how much voltage? Ex: low voltage - 1volt to 240volt like this   3
what is the voltage and ampere rating of all range of HT conductor?   1
what is current actully?significance of current...not rate of change of flow.....   3
How can we calculate the rating of capacitor bank to be connected for a particular load(ex.100kw)to improve the power factor from 0.8 to 0.9? Voltas 4
A 60W,250V bulb when connected to a 230V supply will it give more light or less or will be give normal light? Mahagenco 3
in elevator industries , how to calculate the required KVA for the elevator (elevator spec- 40A module , motor of 13.5KW, 20A) DLF 1
what is voltage ?   6
Unit of Magnetic Flux Density a) Tesla b) weber c) Hendry d) Farad Ecil 3
 
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