Synchronous*

1)Ans :- Current transformer.

2) Ans :-1mhz

when skin effect occurs __is non uniform in the conductor???
a)current
b)flux
c)voltage
d)both a and b
c)none

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Ans :- 3

Ans 4) Such type of effect mainly occurs because of light load or open circuit at the receiving end. Ferranti effect is due to the charging current of the line.

main drawback of 3 phase transformer is____

a)it is bulky.
b)expensive.
c)it requires large space for installation.
d)if unsymmetrical fault occur in any one phase then transformer not work.
e)none

Ans 4) Such type of effect mainly occurs because of light load or open circuit at the receiving end. Ferranti effect is due to the charging current of the line.



(but sir one more option was there i.e high voltage in transmission line.
so which one is right?

Ans 4) Such type of effect mainly occurs because of light load or open circuit at the receiving end. Ferranti effect is due to the charging current of the line.



(but sir one more option was there i.e high voltage in transmission line.
so which one is right?

1)Leading power factor for synchronous motor occur at........

Overexcited synchronous motor is called

The equipment which sense the fault.....

Secondary of which transformer cant be open

The diode which can change off state to on state in either direction of voltage

The range of frequency of the mosfet

The circuit which use for protection of di/dt and dv/dt of thyristor

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Unit of hazards

Commutator are made up........

Slip ring motor are use