In the Load Test of 3 Phase Squirrel Cage Induction Motor, 2
wattmeters are used. One of the wattmeter deflects in
negative diretion during no load. Why?

Answer Posted / k.prakashchandra

Very low pf

Is This Answer Correct ?    11 Yes 7 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

CAN U PLEASE TELL ME SOME G.D TOPICS FOR APGENCO INTERVIEW&G.D

1951


Why it is possible to use PWM with a STATCOM and not with a conventional TCR based SVC

1585


Why choke coil is connected in series with starter in tubelight??why starter is connected in parallel to tubelight??

2939


please explain how to do 'pole drop test' on generator?

2384


write down the formula of cable size in RM if current is 50Amp.

921






In MEP Services what are parts of STP and what are there function?

2946


what is the chemical name and formula of refrigarent R-134a.

1782


what are the safety measures of induction motor?

1586


What is Tachometer used to measure?

740


What is meant by stator? What is meant by rotor?

633


Why we used 690V in ACS 800 drives.Why dont use standard voltage like 415v or 1.1Kv

1931


importance of reactive power management

1589


explain the process of commutation in a dc machine. Explain what are inter-poles and why they are required in a dc machine.

701


TO CALCULATE THE RESISTANCE OF GRR OF HT MOTOR 400KW WHEREAS STATOR VOLTAGE 6.6KV AND ROTOR VOLTAGE 705V AND ROTOR CURRENT IS 346A.

4951


why r we using shell transformer for low voltage

1547