In D O l starter motor starts as a star connected ,then in star delta starter also motor initially starts as star how come star delta is preferred from dol

2 Answers  

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WHY ARE THE LT GENERATORS SOLIDLY EARTHED WHILE THE HT GENERATORS ARE EARTHE THROUGH NGR OR NGT??

3 Answers  

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Utility company give the supply to customer in KVA but bill them for Watt.why?

1 Answers   L&T,

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give single line diagram of D.O.L and star -Delta starter ?

8 Answers   ABS, Al-Shuaah, Alkali Metals, Cabin Crew, Cognizant, CRI, Gwalior Distilleries, Hotels, Logicon Engineers, Max India, Nicomet, Radisson Blu, RK Company, Siemens, SLCM, Solar, Steel Strips Wheels, Sugar Factory, TATA, TCS,

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what is power factor

6 Answers  

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If a 1.5V,3W torch light bulb is connected in series with a 15HP/11.19KW,230V single phase motor and the combination is connected against a 230V supply and switched on than what will happen keeping all other parameters as it should be A)the bulb will glow normally B)the bulb will not glow C)the bulb will glow with extra brightness D)the bulb will burn out and if a fuse is connected to the above circuit will something happen to the fuse and what about the single phase motor will it be affected? Please explain with derivation

4 Answers  

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how to select power and control contactor .

1 Answers   Bhel,

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How do you reset circuit breaker?

1 Answers   Bhel, Kaveri Steels,

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Why HRG and LRG used beside transformer, what is the purpose

3 Answers  

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Why in india freq. is 50HZ & in U.S.A. it is 60HZ?

2 Answers   MacLellan,

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what are the basic insulation levels & what its Unit

0 Answers  

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which trsanmission is easy and cost effective AC or DC.

19 Answers  

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