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ITI
Electrician
Electrician Set-2
Inverter and UPS
20

Inverter and UPS MCQ with Answers

20) Where square wave inverters are used?

Computers

TV receiver

DVD players

General lighting

Answer is:

General lighting

Inverter and UPS MCQ with Answers

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Related Inverter and UPS MCQ with Answers

21) How the backup time of UPS can be increased?

Increase the VA rating of UPS

Increase the AH capacity of battery

Decrease the AH capacity of battery

Maintain battery terminal voltage always 90% of rating

Answer is:

Increase the AH capacity of battery

22) How the hard sulphation defect in secondary cell can be prevented?

Provide trickle charging

Provide freshening charge

Provide constant current charging

Provide constant potential method charging

Answer is:

Provide trickle charging

How the hard sulphation defect in secondary cell can be prevented?

23) Which part in UPS supplies continuous output voltage in case of input voltage failure?

Battery unit

Inverter unit

Rectifier unit

Controller unit

Answer is:

Battery unit

24) What is the effect during loading of the cell, the current strength falls and become zero?

Buckling

Polarization

Local action

Amalgamation

Answer is:

Polarization

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