What is the difference between AC and DC injection methods for rotor earth fault protection

0 Answers   Asian Alliance Insurance, NBVL,

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What is difference between potiential,volatge and emf

1 Answers  

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control & auxilary circuits used for circuir breakers

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How we find the size of cable if we know the current

2 Answers   Gemscab,

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Operation carried out in thermal power stations?

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What are the effects of armature reaction on a DC machine and discuss the various methods to reduce the effect.

1 Answers  

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What is difference between isolator and circuit breaker?

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iii) 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 Answers  

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Explain forward resistance, static resistance and dynamic resistance of a pn junction diode.

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what is form factor

2 Answers  

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what is the value of current and voltage that our body can resist ?

3 Answers  

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what is the role and fuction of automatic transfer switch in rotary ups

0 Answers   Dynaspede,

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