In a synchronous generator, choose what happens to number of poles if the value of frequency is increased O a. The number of poles will decrease O b. The number of poles will be doubled O c. The number of poles will increase d. none of these options

Q: The synchronous speed of the rotor is 2100 and the percentage is 0.02% and that the synchronous…

A: In this question,  We need to determine the synchronous speed of the field?

Q: Q6) A three-phase synchronous generator 4.6-KV and 500-KVA and 60-HZ and 4 poles with star…

A: Given that 3-phase synchronous generator 4.6KV,500KVA,60Hz,4 poles Y (star) connectionSynchronous…

Q: 10.If the number of poles is constant, how to control on the generated frequency of 3 phase…

A:

Q: True or False: The voltage at the shunt field in a long-shunt generator is the same as the load's…

A:

Q: For 50 Hz system the maximum speed of a synchronous generator can be 3600 rpm O approximately 3000…

A: The Synchronous speed of  a synchronous generator  is given by formula  Ns =120f / P   Where, P =…

Q: Increasing the frequency of synchronous generator will decrease the induced emf.

A: Relation between induced emf of synchronous generator and frequency:

Q: When synchronous machines are operated as generators, peak voltages decrease in case of

A: In this question we will find When synchronous machines are operated as generators, voltage in case…

Q: 4.1Two synchronous generators need to be connected in parallel to supply a load of 10 MW.  The first…

A: The solution is given below

Q: 500MVA, 21KV, star connected, 3ph 50Hz synchronous generator is operating at the rated voltage, a…

A: Types of Short circuit Transient Sub Transient Period Transient Period Steady-state period

Q: In the stator winding of a synchronous generator, the chording angle is for eliminating fifth…

A: Given, In the stator winding of a synchronous generator, the nth harmonic n = 5

Q: a generator has a capacity of 2000KVA and 10% of internal percentage reactance, for symmetric fault…

A: (MVA)old = 2000 MVA (MVA)new = 5000 MVA %Xold = 10 %

Q: type of generator is used as boosters on dc feeders

A: Series wound DC generators are restricted for the use of power supply because of their increasing…

Q: D.C shunt generators are most suitable for arc winding

A: The most suitable DC genrator for arc welding is Differential compund genrator.

Q: /hat does it mean when the power factor is leading? rue or false: 1) A load with a leading power…

A:

Q: Determine the closed loop poles for a 2nd orde underdamped system knowing its peak time an angle…

A: Given Data: β = 54tP=5 s

Q: In cumulative compound DC Generator the shunt field current and the series field current are in…

A: The explanation is as follows.

Q: An isolated 50 Hz synchronous generator is rated at 15 MW which is also maximum continuous power…

A: An isolated 50 Hz synchronous generator rated at 15 MW, Droop=5%, Three loads of 4 MW each at 50 Hz,…

Q: The shunt dc generator runs, but there is no output voltage because of Select one: O a all mentioned…

A: In a dc shunt generator, if there is no residual flux, the armature of the motor will not have…

Q: For 50 Hz system the maximum speed of a synchronous generator can be

A: Given data, Frequency f = 50 Hz. For maximum speed number of poles P = 2.

Q: Synchronous generator can operate at any speed since the number of poles and the frequency is fixed…

A:

Q: In three-phase induction motor rotor speed is always greater than synchronous speed. Select one: O…

A: In induction motor the rotating magnetic field which is produced in the starter will generate flux…

Q: In long shunt DC generator Series field winding current Ise is equal to

A: -The circuit diagram for long shunt DC generator is given below:

Q: 4- With the increase of the winding of a d.c. generator, terminal voltage wil c) Remain same a)…

A: (4)  With the increase of winding of a dc generator, the armeture resistance of winding also…

Q: Design Synchronous counter with the sequence given below 1-4-6-7-0-1

A: we need to design synchronous counter.

Q: If it is desired to bring alternating current out of a generator, what kind of a "take-off" system…

A: If the alternating current is required from the generator a copper or brass rings are connected at…

Q: Series motor can be used in cranes upward and downward motions. O True O False

A: In this question we will write about dc series motor...

Q: The alternator frequency is direct function of rotational speed and number of poles. O True O False

A:

Q: A 100kW generator, 250V, 6 poles have a wave wound armature with 300 turns then the number of…

A: The solution can be achieved as follows.

Q: True or False Due to their shape, full-pole generators are more affected by wind and centrifugal…

A: Due to their shape, full-pole generators are more affected by wind and centrifugal forces than other…

Q: I need the curve between the power factor and mechanical load in synchronous motor

A: The relation between Power factor and mechanical load is given by inverted V- curve of motor. It is…

Q: operating frequency

A: Given- Power factor= 0.8 Frequency= 62 Hz Damping coefficient= 2 MW/Hz Power= 2 MW

Q: The swept area of a wind turbine is 485 m. The diameter of the rotor is, Select one: O a. 617.02 cm…

A: The swept area of wind turbine refers to the area of the circle created by the blades when they…

Q: The rotor of synchronous generator has two slip rings for DC supply Select one: True False

A: The rotor of synchronous generator has two slip rings for DC supply

Q: Adjustment resistance in rotor system will --------when three phase load .decrease Increase O not…

A: Adjustment resistance is also known as external resistance. Purpose of adding external resiistance…

Q: The slip rings ause a d.c enerator to

A: Slip ring is a closed circular ring with the brushes connected to outer surface. In case of AC…

Q: The sync be regula speed.

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Q: The cylindrical-rotor synchronous machine * is with is with maximum air-gap along the direct axis…

A: There are two types of synchronous machine: Cylindrical rotor synchronous machine Salient pole…

Q: Low lagging power factor results in voltage drop which results in poor voltage regulation.

A: Low or poor lagging power factor means voltage drop across the terminal is more due this voltage…

Q: Demonstrate over compound flat compound and under compound DC generator with the help of circuit…

A:

Q: Design Synchronous counter with the sequence given below 6-4-2-0-3-6

A:

Q: What is virtual synchronous Generators and their applications in Microgrid

A: It is asked to explain virtual synchronous generators. Also we need to mention the applications of…

Q: Damping in the generator should be considered in dynamic stability studies. Select one: O True O…

A: given statement is TRUE.