Prepare the winding table for a four-pole dynamo with 24 slots and 24 commutator bars employing simplex lap winding

Q: What speed (in rpm) must a two-pole rotor rotate at to produce 50HZ AC?

A: given data f=50 Hz pole=p=2 N=speed in rpm

Q: A 6 pole, DC generator has a wave-wound armature containing 30 coils of 5 turns each. Its flux per…

A: Given- Number of poles P=6, DC generator- wave-wound armature, 30 coils of 5 turns each, Number of…

Q: 4. The simplest way to reverse the rotation direction of a three phase AC motor is Use stator CEMF…

A: In this question we will write about the simplest way to reverse the rotation direction of three…

Q: To change the direction of rotation of a series wound DC generator the general rule is to

A: To change the direction of rotation of a series wound DC generator  Note: we always change the…

Q: In an induction motor, if the supply voltage is above normal then the machine will operate with High…

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

Q: i. What are different types of rotors used in an alternator?

A: There  are mainly two types of rotors used in alternator.

Q: What is the freq. of a 10-pole alternator when running at 360 rpm? (b) At what speeds should a…

A:

Q: The speed of rotating magnetic field of 8 pole 50 Hz induction motor is?

A: Given, Frequency, f = 50 Hz. The number of pole, P =8

Q: A series DC generator has an output voltage of 200 volts, an armature resistance of 0.070 and an…

A: Consider the formula for the EMF is. E=V+IR Here, R is the combined resistance of field winding and…

Q: What is the copper loss in the rotor circuit in kW? An induction motor is running at 40% of the…

A:

Q: the efficiency of the 1 phase induction motor could be better increased by adding a permanently…

A:

Q: Armature reaction in an alternator primarily affects

A: Conceptual Background:- Armature Reaction:- Simply put, the armature reaction depicts how the…

Q: What are the following statements are true for a three-phase induction motor? I. Three-phase…

A: We need to select correct statement regarding three phase induction motor.

Q: block diagram fro dc motor refrigerator

A: Electrical machines can be either generator, transformer or motors. They can be either Ac machines…

Q: A DC generator with an armature resistance of 0.3 ohm and a shunt winding resistance of 125 ohm…

A: For generator ,  Armature current = Load current + shunt field current  developed power = Armature…

Q: If the supply voltage in a three-phase induction motor is reduced by 10%, what will be the…

A: Given, The supply voltage of a three phase induction motor is reduced by 10 %. Let, E1=EE2=0.9E

Q: In dc machines, armature windings are placed on the rotor because of the necessity for…

A:

Q: What is the difference between wound rotor induction machines and squirrel cage machines

A: The wound rotor (also called as slip ring) and squirrel cage machines are the type of rotor in…

Q: small 4-pole generator with a six-turn rotor coil generates the following voltage wave: e = 169.706…

A:

Q: Explain why rotator rotates in three phase induction motor

A: Induction Motor: The Induction motor is basically a rotating machine. It converts  Three phase Ac…

Q: When the field current (If) is increased towards its rated value in the DC shunt generator, the…

A: Given, DC shunt generator, If, field current is increased

Q: There are 180 double wound slots in a 3-phase, 50 Hz., 500 rpm, star connected alternator. Coil span…

A:

Q: Q25) i) What are the factors that the induced voltage in three phase induction motor depends upon…

A: Factors that the induced voltage in three phase induction motor depends upon : 1. Magnitude of…

Q: A 6 pole, 50 Hz, 1-phase Induction Motor runs at a speed of 900 rpm. The frequency of currents in…

A: We need to find out cage current frequency for given motor

Q: In a motor-generator set, calculate the number of poles required in the motor to convert AC 60 Hz…

A: In this question , we will find no of poles of motor with given motor generator set data...

Q: 93. A 4-pole de generator runs at 1500 rpm. The frequency of current in armature winding is (a) Zero…

A: Given, Total number of pole, P = 4. Speed, N = 1500 rpm.

Q: The synchronous generator excitation system...

A: There are various generator excitation system-  DC exciter Brushless exciter AC exciter   a- Here…

Q: amature windings commonly used in DC machines a DC shunt generator are wound with a large numbe C…

A: 3. In Dc generator brushes are used to convertalterating current (ac) which is armature wlndingsto…

Q: Compensating winding is placed in the pole shoe O all of the above O armature core O main field O

A: Given: The Compensating winding is placed in the Pole shoe All of the above Armature core Main…

Q: A small 4-pole generator with a six-turn rotor coil generates the following voltage wave: e =…

A:

Q: The following questions refer to to a 6-pole DC generator has a simplex lap-wound armature…

A:

Q: A commutator has 456 segments. Indicate whether or not the windings are possible a. Duplex-wave,…

A:

Q: The actual rotor resistance referred to the stator in an induction motor is? O a. r2 O b. r2/(1-s) O…

A:

Q: LA 6-pole, 50 Hz single-phase inductor motor runs at a speed of 950 rpm. The frequency / frequencies…

A: Given -  frequency f = 50 Hz, Pole P = 6, Motor speed Nr= 900 rpm.   To find - Frequencies of…

Q: how does the rotor of a 3-phase induction motor get power a-  through brushes and commutador…

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

Q: The sparking at the brushes of a dc generator is due to winding distribution high constant…

A:

Q: How voltage is built up in dc shunt generator

A: as the name suggests the field winding of the shunt generator is connected in parallel with the…

Three Phase Induction Motor

The induction motor is an electric motor that runs on AC (alternating current) and it is of two type single phase motor that work on single-phase power supply and three-phase motor that work on three-phase power supply.