C shunt generator with the terminal voltage 375 V, arn

Q: Fill in the following blanks: 1. In order to have sparkless commutation, the brushes should be…

A: 1.In order to have  sparkless commutation, the brushes should be placed along the MNA axis 2.D.C…

Q: ion generator depends upon: nase a) Slip E)Both b) rotor constants d) Neither a nor b a and b

A: The power factor of a three phase induction motor depends on slip and rotor constants.

Q: A 6 pole, 3.3 kV, 50 Hz dalta -connected three-phase induction generator has the following…

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Q: An ideal dc generator has regulation of 40% O 20% 30% O Zero

A:

Q: The winding data for three different alternators are as follows I. 60 slots, four poles, span 1 to 9…

A: pitch factor=cos(short pitch angle2). slot angle=180slot /pole.

Q: Explain! The main disadvantage of using short pitch winding in alternators is that it…

A:

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: In a synchronous generator *

A: the power angle is an angle between the E and V

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: In generator, the generated e.m.f will increase with the load. separately excited dc generator self…

A: In this question we need to choose a correct option.

Q: dc compound generator

A:

Q: Copper losses in a generator vary with load

A:

Q: 3- What are the reasons of fall of terminal voltage of a d.c. shunt generator?

A: DC shunt generator: It is a direct current generator in which the field winding is connected in…

Q: 8A (L 2A

A: In source transformation, one source works at a time. When 8 A is OC , 9 ohm and 3 ohm resistors…

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: The emf induced in the dc generator armature winding is * O AC and DC O DC O None of the above O AC

A: In dc generator Emf induced in Armature winding is AC only

Q: 2. For which reasons its not possible to develop rated voltage of d.c shunt generator, both in…

A: It is not possible to develop a rated voltage in dc shunt generator because of the commutation.…

Q: The regulation of an alternator is likely to be negative in case of resistive load O True O False

A: Regulation of alternator at any load is   Voltage regulation = Rpucos(∅)±Xpu sin(∅) + for lagging…

Q: Thyristor regulators A.C TYPE GENERATORS GENERATOR TYPES ACCORDING TO THE NUMBER OF PHASE

A: Thyristor regulators Thyristor power controllers (SCR power controllers) control power & voltage…

Q: Instantaneous power output of a 3-phase 60 Hz generator will not be constant under following…

A:

Q: The winding data for three different alternators are as follows 1. 60 slots, four poles, span 1 to 9…

A: We will find the pitch factor in each case as shown below.

Q: The distribution factor for 90 slots, 10-pole, 3-phase winding is A 0.90 B C D 0.895 0.959 0.978

A: Given: A 3-phase winding machine with, Slots = 90. Pole = 10.

Q: A shunt generator has a no load terminal voltage of 270V and a voltage of 240V when it delivers…

A:

Q: The winding data for three different alternators are as follows 1. 60 slots, four poles, span 1 to 9…

A: pitch factor can be calculated using the following relation Pitch factor = cos(alpha) / 2

Q: The DC generator has both shunt and series field winding which wound on to the san poles. O Shunt O…

A:

Q: A synchronous generator runs at 250 rpm and generators at 60HZ. There are 240 slots each containing…

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Q: The reactance of a generator is given as 0.1 pu based on the generator of 17 KV, 300 MVA. Determine…

A: In this question per unit impedance given on some Mva and kv..We have to find new ou impedance on…

Q: The field coils of a six-poles D. C. Generator, each having 600 turns, are connected in series. On…

A: we have to calculate the average voltage induced.

Q: The load characteristic curve of the DC generator is the relationship between the O Load current and…

A: Correct answer is Load voltage and load current the load characteristics are also called external…