whether fibre optic cable in high voltage earth conductor is used for protection circuits

1630

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150mm bricks size how many use 4.14 m3

1901

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What is the function of solenoid valve in on/off & shutdown valve and why it is not used in control valve normally?

2034

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what is the criteria to decide conductor size of a cable ?

1872

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On 400 amp factory load how kvarh capacitors provide

1718

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what is the class of generator A b & c

1642

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Please design 12.5m long dubbly beam

1904

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.5Ast

1793

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what is the anchorage length of reinforcement.

1776

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What is shunt voltage and u v voltage witch one best

1741

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A 10 MVA, 66KV, 50Hz, Y-connected 3-phase alternator has synchronous reactance of 0.635 Ù. It is working at full load at 0.8 lagging p.f. condition. Find torque angle, neglect armature resistance.

2606

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With a phasor diagram show the effect of increasing the field current of a generator supplying a constant real power and connected to a grid system.

1991

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Draw the wave shape of armature current in a generator subjected to a sudden three phase short- circuit at its terminals. Define various reactance of generator from this wave shape.

2249

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A 400 V, 50 Hz, Δ connected synchronous generator has a field reactance of 0.1 Ω and armature resistance of 0.015 Ω. At full load, the machine supplies 1200 A at 0.8 pf lagging. Under full-load conditions, the friction and windage losses are 40 KW and the core losses are 30 KW. What is the machine’s overall efficiency? Ignore any field circuit losses.

1932

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A generating system will have a total capacity of 300 MW. Find the probable forced outage when the capacity is supplied by two 150 MW units. The operating probability of all units is P=0.98 and forced outage probability rate Q =0.02 .

2654

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