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Question
what is the main function of contactor?????
 Question Submitted By :: Bipul Sharan
I also faced this Question!!     Rank Answer Posted By  
 
  Re: what is the main function of contactor?????
Answer
# 1
contactor has main function to control the power through
low power (push button etc.)
 
Is This Answer Correct ?    14 Yes 8 No
Dilawer
 
  Re: what is the main function of contactor?????
Answer
# 2
The function of a contactor is to make or break the circuit
on receiving a command.It is used to design auto ckts.
 
Is This Answer Correct ?    20 Yes 3 No
Sdr
 
 
 
  Re: what is the main function of contactor?????
Answer
# 3
The contactor means the contact to make or break the circuit with useful protection.basically contactor used in starter circuit. 
Is This Answer Correct ?    7 Yes 2 No
Baljeet Singh
 
  Re: what is the main function of contactor?????
Answer
# 4
where the no. of operation is more, this contactors are
used.
 
Is This Answer Correct ?    3 Yes 5 No
Sridhar
 
  Re: what is the main function of contactor?????
Answer
# 5
When a relay is used to switch a large amount of electrical
power through its contacts, it is designated by a special
name: contactor. Contactors typically have multiple
contacts, and those contacts are usually (but not always)
normally-open, so that power to the load is shut off when
the coil is de-energized. Perhaps the most common
industrial use for contactors is the control of electric
motors.
 
Is This Answer Correct ?    22 Yes 1 No
Doli Tomar
 

 
 
 
Other Electrical Engineering Interview Questions
 
  Question Asked @ Answers
 
Why the cost of CT increases with the decreasing of its CT Ratio (Technical Reason)? Vedanta 1
what is the diff between VCB & ABCB breaker in substaions? explain the operating priciples of VCB & ABCB   1
Why transformer rating is represent in KVA? bhel 4
WHY WE NEED AUTO TRANSFORMER,WHERE WE CAN USE? L&T 5
how LT meggar works Essar 1
An alternator is started without excitation then how much voltage it will produced at strating at full rpm??   4
when we given 3 phase supply to ups system, but out put comes with 3 phase + neutral how it possible? pls explain. Juniper-Networks 3
If stator & rotor of a 3-phase induction motor have different no. of poles, will the motor run or not??   3
what is the formulae for calculating the cable size for a given voltage and current. Bharat-Forge 2
WHICH IS BETTER( FOR POWER SAVING)- ON LINE OR OFF LINE UPS ? Punjab-National-Bank 3
how capacitor active and reactive. Birla 1
How do you select a cable size(Cu&Al) for a particular load BPCL-Bharat-Petroleum 10
 
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