The Line Voltage of a star connected three phase alternator is 255 Volts. The Phase Voltage (Vph ) will be

Q: 6. Discuss the difference between direct current and alternating current?

A: Current is flow of electrical charge  These are of two type Dc current  Ac current

Q: Loss of excitation is one of the stator faults of alternator which is operational at power station O…

A: 1)Loss of excitation is one of the fault on rotor. 2)Loss of excitation is a very common fault in…

Q: (a) What is the resistance of a 220-V AC short circuit that generates a peak power of 96.8 kW? (b)…

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Q: Compare between 2-pha motor and universal mot

A: On the basis of constructional details and basic working principles motors are classified into…

Q: The dc armature resistance of delta-connected alternator measured across its two terminal is 0.8…

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Q: 3. The secondary voltage can rise above its rated value when the load is a. resistive. b.…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: A three-phase, star-connected alternator has 6 number of poles, armature with 140 slots and 4…

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Q: A star connected Alternator excitation voltage and terminal voltages per phase respectively are 180V…

A: Alternator: It is used to convert the mechanical energy to electrical power in the form of…

Q: When a rated load with 0.8 lagging power factor is supplied, the terminal voltage of a single phase…

A: Given, The terminal voltage of 1-phase alternator at full load, Vfl=200 V Open circuit voltage or no…

Q: EXPLAIN BRIEFLY THE SYCHRONOUS ALTERNATOR WHEN OPERATING AT NO LOAD

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Q: Make a general statement on the effect of increasing excitation to the power factor of the…

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Q: 3.The voltage generated across one inductor of an alternator is 8.11V. There are 120 slots and 4…

A: The e.m.f induced in one conductor = 8.11 V No. of slots (S) = 120 Synchronous speed (Ns) = 720…

Q: 3- Determine the coil span for 3-phase, two pole alternator, the pole pitch is equal to 18 slots and…

A: For a two-pole alternator,Pole pitch = 18 slotsCoil span factor =32

Q: A 11 kV, 500 MVA alternator is connected to a slow C.B. through a bus-bar. Determine the three…

A: Basic Equipment used in High voltage transmission Circuit Breaker Lightning Arrester Current…

Q: A 3-phase 4-pole alternator has 48 stator slots carrying the 3-phase distributed winding. Each coil…

A: Given- 3-phase, 4-pole alternator, 48 stator slots, 3-phase distributed winding, To Find- The…

HVDC

HVDC stands for high voltage direct current in the electric power transmission system. The high voltage direct current system uses direct current (DC) for the transmission of electrical power through transmission lines in contrast with the alternating current that is the AC system. The HVDC is used to transmit bulk power point-to-point through long distances transmission lines. Power is rapidly transferred because the efficiency of transmission lines is greatly increased over long distances due to HVDC lines.