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how to distinguish between ac motor and dc motor without seeing name plate of it.only seeing its getup look
3 10588when u are given a timer,push buttons and contactor, how do i practically make a star delta control circuit and a direct online control circuit?
1 2615why are we adopting 132kv,220kv for transmission rather than using 440kv at all transmission lines as it gives lower losses?
2 6638what is the difference b/w KVA and KW? the transformer are mentioned KVA rating and the loads are mentioned KW.why?
2 3426ii) A shunt motor supplied at 230V, runs at 900 rpm when the current is 30A. The resistance of the armature is 0.4 ohms. Calculate the resistance required in series with the armature to reduce the speed to 600 rpm, assuming that the armature current is then 20A. [12]
2299iii) A shunt motor runs at 70 rad/sec from a 460V supply and takes in an armature current of 100A. Resistors of 2.52 ohms and 1.64 ohms are connected in series with the armature and in parallel with the armature respectively. The field excitation remains direct from the 460V supply but the generated torque is halved. Determine the new running speed. Neglect brush voltage drop. The armature resistance is 0.4 ohms. [15]
1 2556Post New Electrical Engineering Questions
Why derivative controller is not used in control systems?
Give two basic speed control scheme of dc shunt motor?
what irequirment need to be followed when working on live equipment
If we have to find the inductance of a dc shunt motor then by giving dc supply or ac supply and what is the reason for it. (this example is from "to determine the transfer function of a dc shunt motor ")
what will be happen if earth point is being used for as a neutral point for raw power , and same will be used for ups earthing
What is the formula of frequency ?
sail kaott diploma ece ke interviw me qus.kis parkar ke aate hai aur G.S me kya puchate hai kya sameedyaan me kis parkar ke qu.puchate hai
how the inner and outer body is separated in aircrafts?
how to calculate cooling requirement of datacentre from electrical load?
Why does amplifier gain reduce?
How to decide no. of Step and Kvar for APFC Panel 40 kvar MD: 33.12 KVA Avg pf : 0.8540
what is the profesional board for electrical engineer what is thepast and during construction for electrical engineering
What is “pu” in electrical engineering?
How delta connection in the primary of distribution transformer reduces harmonics?how delta connections reduces harmonics?Please answer me...Hope that question is correct.
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