Answer Posted / meenakshi

there vil b two windings. they are main winding n starter
winding of two different inductances.i.e, one with low
inductance n another with higher value. so ther vil be a
phase shift of q1 and q2(say some angle)in accordance with
inductance value. NOW, IN ORDER TO INCREASE THE PHASE
DIFFERENCE BETWEEN Q1 N Q2, WE EMPLOY A CAPACITOR OER
HERE,WHICH MAINLY HELPS IN STARTING.

what would happen if reactive power (kvar)is increased (more)or decreased (less)? how much exact reactive power should be maintained? and what should be done for that

2251

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Calculate torque developed by the 3-phase, 5 H.P., 4 pole induction motor runs at 1500 rpm A 23 N-m B 21 N-m C 10 N-m D 0 N-m

5181

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2036

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which fault is severe and why?between lll fault and lllg fault which fault is severe and y?

2482

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hi guys please tell me the procedure for mesuring the coil resistance of 3ph induction motor?

1879

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What is the main use of rotary phase converter ?

1128

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1594

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Give some differences between open loop and closed loop control systems.

1152

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What does the letter CTNM in negative phase sequence relay means?

1799

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While converting delta into star or star into delta ,the three values of resistances remains unchanged .Find out the value?Let In star R1=x;r2=x;R3=x On converting into delta,R12=x;R23=x;R31=x Find the value of x

1908

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What is synchro?

1144

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1844

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3422

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when qty of cable being purchased is not sufficient according to the standard,what should the inspector do to ensure its quality according to the standard?

2064

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briefly explain principle of resistance welding

1839

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