ETO

A relay is an electromagnetic switch device which utilizes very small electric current that can turn on or off a much larger electric current. The heart of...

(a) Pneumatic lock up and fail safe system Pneumatic lock up and fail safe system serve to bring about particular valve position in...

SOLAS Requirements Emergency generator and ESB should be located above the uppermost continuous deck, not forward of collision of bulkhead.MSB or any machinery...

1. Alternator shows no voltage Causes: Exciter field resistance is too high or there is a loss of residual magnetism.Short-circuit in excitation...

SYNCHRONIZING AND PARALLELING OPERATION OF ALTERNATORS Main generator units(steam turbine, diesel driven & shaft driven) have to be run in parallel to share a total load that surpass the capacity of...

Q Explain with the aid of sketch, the working principle of IGBT(Insulated Gate Bipolar Transistor) in varying motor speed control

Q. What is the regular maintenance done on batteries? Ans- Every week the cell voltage is checked. The specific gravity is monitored using...

In this machine slip-rings and brushes are eliminated and excitation is provided not by conventional direct current exciter but by a small alternator. The a.c. exciter has the...

A capacitor is a two terminal electrical component used to store electrical energy temporarily in an electric field. The types of practical capacitors vary widely, but all...

Q. Why is a Megger used for insulation test and not a multi meter? Ans- With a megger,a voltage of not less than...