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77 In constant power region of 3-phase IM torque-speed characteristics, the torque is proportional to A speed B slip C 1/speed D 1/slip
1 2769In constant power region of 3-phase IM torque-speed characteristics, if frequency increases slip A does not alter B decreases C increases D none of above
2063In constant power region of 3-phase IM torque-speed characteristics, if frequency increases flux A does not alter B decreases C increases D none of above
2259In constant power region of 3-phase IM torque-speed characteristics, if frequency increases voltage A does not alter B decreases C increases D none of above
1 2787Stator of 3-phase IM has 3 slots per pole per phase. If supply frequency is 50 Hz, calculate the speed of rotating stator flux A 1000 rpm B 500 rpm C 1500 rpm D 1440 rpm
2191Stator of 3-phase IM has 3 slots per pole per phase, calculate number of stator pole pairs. A 1 B 6 C 2 D 3
2 4581A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Calculate number of pole pairs. A 1 B 6 C 2 D 3
2025A 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 5139In 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
1900The 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
2092To 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
1985When we trim a resistor, we are A Making a fine adjustment B Reducing its value C Increasing its value D Making a coarse adjustment
1949Typically, an IA has an external resistor used for A Establishing the output impedance B Setting the voltage gain C Setting the current gain D Interfacing with an instrument
1677
distribution is maximum done by a)radial b)network c) parallel d)b & c
What is blouson?
Explain why does all cellular networks have same shape of sim? Why is it designed in such a particular shape? Does it have any other shape?
For overhead protection we use which transformer?
What is meant by delay angle?
What is residential silencer and industrial silencer? how can we know by looking only that it is the Residential type silencer.
why we use circuit breakers for switching instead of normal switching device?
what is the difference betweem star connected motor & delta connected motor?
What happens if you use petrol in diesel engine?
Tell me why gold is added to the p-n junction?
what is meant by directional earth fault and non directional earth fault? describe both.
What are the different parameters that can be measured using a q-meter?
Define the meaning of tristate signal in electronics?
A ii kv 1200 A Breaker combination fixed in a cubicle. How many ampere Fuse is required? If fuse is not using, Why?
An impedance of 100 ohms resistance and an unknown inductance is connected across the capacitor. The resulting impedance is a pure resistance of 500 ohms ifω = 10^5 rad/sec. calculate the values of inductor and capacitor.
