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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 5284In 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
1951The 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
2126To 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
2025How 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
2186Why 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 4057We 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 359110 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 7398Maximum efficiency occurs in electrical machines is at i)Full load,ii)50% of full load,iii)Near full load,iv)None of these
1 4798Post New Electrical Engineering Questions
number of I/O devices in siemense plc
What is the difference between Static and servo controlled voltage stablizer?
What is the IS standard for MCCB to be use (As per capacity of AMP)& for ACB also.
In radial network the source is fed from 1 end both ends at central
i want some interview related questions with their answers which can help for attend the interviews...
Why do we perform an open-circuit test and short-circuit test on the transformer?
What is the function of the generator exciter?
what is the difference between delta delta and star delta connection transformer? why we use delta delta transformer since it need earthing transformer for grounding?
what are the installation procedure of high voltage power transformer,CT,CB&PT?
High speed earth switch operation with diagram
How to Calculate The Neutral Earth flat design calculation for the Synchronised generator (Gen 1-650Kva, Gen 2-725Kva
what is electrical machines
what mean by analog ,digital,numerical meters and relays? say the example?
Application Comparison between 22KV (UE)and 33KV (E) system. Are we allowed to use 33KV (E) cable in lieu of 22KV (UE) cable. What are the technical disadvantages.
A double circuit with dog conductor 66KV Transmission line from wind farm evacuation to feeding substation having capacity of 25MW for transmission. Can same transmission network be considered for further expansion of Power & how much in MW. If we need to expand next 10-15 MW more will there any augmentation is required in transmission network? Kindly reply asap.
