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A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Calculate rotor frequency. A 50 Hz B 0 Hz C 4 Hz D 6 Hz
3 5134In a voltage-controlled current source A A current booster is never used B The load is always floated C A stiff current source drives the load D The load current equals Isc
1895The Howland current source produces a A Unidirectional floating load current B Bidirectional single-ended load current C Unidirectional single-ended load current D Bidirectional floating load current
2090To make a basic instrumentation amplifier, it takes A One op-amp with a certain feedback arrangement B Two op-amp and seven resistors C Three op-amps and seven capacitors D Three op-amps and seven resistors
1981How to design a Unit auxiliary transformer for a power house having a unit of 65 MW and Generating voltage of 11 KV and Secondary voltage of 433V
2137Why should not we run the IM in low voltage, if runs means what will happen?(for example instead of 400V we give 250V supply)
2 3958We have 2 11kv/433v transformers for 2saperate acb for mv panels and 1 bus coupler acb. Suppose I’ll close bus coupler what will happen or it will be share the load. Please suggestion and any modification required.
1 351210 hp motor ,7.5 kw ,960 rpm, full load current 15.5, delta connection so how much take current no load trial time. any formula please give..... second question :- what is different between brekar control wiring and motor starter control wiring
MSP,
1 7337Maximum efficiency occurs in electrical machines is at i)Full load,ii)50% of full load,iii)Near full load,iv)None of these
1 4739Post New Electrical Engineering Questions
what r the safety measures in UPS ? explain all?
What is the function of interposing current transformer?
What is the difference between PS & metering CT (5p20,0.5 etc.)? Why in PS class CT only Vk is given ? Is PS class CT is more accurate than metering CT?
explain working principle of earth leakage relay
bsec exam syllabus (mis)
What are the main advantages of bode plot?
i m doing DEEE in part time,can i join regular cources in BE,,IF i join what the cources can i select like (civil,ece,IT) ,,kindly advice
What are protections for dty type transformers
What is the lockout relay
what is the difference b/w UHVDC and HVDC(LIGHT)?
how to determine motor size for a fan application?
What is the role of Dedicated earthing in UPS System?
why is the conservator tank painted white on the transformer
how power is generated,and transmitted to our home..pls explain briefly in simple words.
can we use CBCT in neutral of solidly grounded transformer? in place of three phases we can pass only one phase which decreases the size of CBCT?
