DC Electric Machine: What is the synchronous speed of a 4-pole synchronous machine operated in a 60Hz network, and what is the electrical angle corresponding to 1 tao rotation around the stator? rmp/ angle A)1800/720 B) 3600/720 C) 3600/180 D) 1800/180 E) 1800/360

Q: A dc generator rotate at 300 r/min. The stator is designed for 6 pole. Total produced magnetic flux…

A: In this question we need to find a EMF generated in DC genrator.  NOTE :- In this question flux is…

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: 5.An alternating current motor's speed is determined by the frequency of the power supply only.…

A: Synchronous generator convert mechanical power in to electrical power. Synchronous generator work on…

Q: Problem 2 The cylindrical machine the following parameters Lss = 0.15 H L,= 0.06 H %3! Lsr =…

A:

Q: If the sequence in which the stator poles are magnetized moves in a CCW direction, the rotor…

A: straight questions on condenser motor and rotation of VR stepper motor

Q: A 243.5 shunt Generator generates 4.5 Amps. Its Armature resistance is 1.1 Ohms. What is the…

A:

Q: the principle of gauss and tesla meter depends on الاختيارات forward biase

A: The principle of Gauss and Tesla meters depend on the Hall effect. The Hall effect is the production…

Q: Give reason(s) for any difference between measured and nameplate values. Discuss the values obtained…

A: It is asked to tell the reasons for the difference in speed between measured and nameplate values.…

Q: If the slip of a 4 pole motor is 0.09 the rotor speed is: Answer to the nearest whole number

A:

Q: Q Advantages of rotating field in an Alternator? (Write five point with Explanation)

A: An alternator is a machine that transforms mechanical energy into alternating current (AC)…

Q: A three-phase supply is generated, when three coils are placed apart and the whole rotated in a…

A: Space angle between the windings for n phase supply is 360n where n is the no. of phases

Q: A thermocouple has an output e.m.f. as shown in the following table when its hot (measuring)…

A:

Q: The gas turbine, diesel motor and steam turbine are called the of a generator to produce…

A:

Q: If the peak voltage of a 60-Hz AC generator is 250 V. What is the instantaneous voltage after the…

A: Frequency = 60 Hz Peak Voltage Vm = 250 V Angle θ = 105°

Q: How many parallel paths does a shunt machine having 6 poles, triplex, wave winding?

A:

Q: 14 If the induction electrical machine operates at slip s = - 0,1 the mode of operation is * O…

A: The answer is Generator

Q: when a generator is being driven at 1200rpm, the generated emf is 230V. What is the generated emf if…

A: Given,  Speed of the generator (N) = 1200rpm Generated emf (E1) = 230V Let the initial field flux be…

Q: A voltmeter gives 120 oscillations per minute when connected to the rotor of an induction motor.…

A: Given that voltmeter is connected to rotor of induction motor and gives 120 oscillations per minute.…

Q: At stand still condition the slip of the induction machine is 1 0 Infinite value none

A: Given, The induction machine is at standstill.

Q: The number of stator poles produced in the rotating magnetic field of a 3-ϕ  induction motor having…

A: We can use the formula,P = 2n- P is the number of stator poles- n slots per pole per phase Given,n =…

Q: If the flux of the DC motor is decreases then the Flux decreases O Supply voltgae increases O Line…

A: Last option is correct. The explanation is provided below.

Q: A dc generator rotate at 300 r/min. The stator is designed for 6 pole. Total produced magnetic flux…

A: Given data: A dc generator rotate at 300 r/min. The stator is designed for 6 pole. Total produced…

Q: If the armature of an 8-pole machine were wound with a simplex wave winding, find the number of…

A:

Q: 1) A buffing wheel is connected to the shaft of a motor. When the motor is switched on, it takes the…

A: when motor is switched on ωi=0ωt=3602cycle/min=360260 cycle/sect1=6.1 seconds

Q: 3 phase 24 pole yy connected AC generation has attra astator with 48 slots each stats ant The coil…

A: In this question,  We need to choose the correct options What is electrical and mechanical frequency…

Q: A stepper motor advances 2.5 degrees per step. How many pulses are needed to complete 8 revolutions?

A:

Q: Determine the Total electrical and mechanical degree for an Alternator

A:

Q: A four pole 60 Hz wound rotor motor is to be used as a frequency converter. At what speed must the…

A:

Q: If the peak voltage of a 60-Hz AC generator is 250 V, what is the instantaneous voltage after the…

A: Given: Frequency, f=60Hz Voltage, Vm=250V Rotation, ϕ=105°

Q: Figure 5A Figure 5B

A: The electrical and the mechanical angle is related by the expression as shown below:  θE=θMP2P=…

Q: When an electric generator is in operation, it is driven or rotated by a mechanical machine that…

A: We need to tell about the system which converts the chemical energy to mechanical energy .

Q: What is the speed of a 100kW, 230V, three-phase, four-pole, 60Hz alternator? a. 450 rpm b. 900 rpm…

A: This is a problem of three phase alternator. The detailed solution is given in the next step

Q: If the slip of a 2 pole motor is 0.08 the rotor speed is: Answer to the nearest whole number

A:

Q: Determine the generated voltage for simplex Lap winding with 4 coil per slot each containing 8 turns…

A:

Synchronous Motor

The synchronous motor is an AC electric type motor where at a steady-state the shaft rotation is synchronized with the supply current variable-frequency. To an integral number of AC cycles, the rotation period is exactly equal. The stator of the motor in the synchronous motor contains multi-phase AC electromagnets due to which a magnetic field is created that rotates in time with the oscillation of the line current. The rotor contains a permanent magnet and the rotor rotates in synchronization with the stator field at the same rate and provides the second synchronized magnetic field which is rotating in nature as a result. When the synchronous motor is supplied with independently excited multi-phase AC electromagnets on both the rotor and the stator, it is termed as a doubly-fed machine. The most widely used AC-type motors are the synchronous AC motor and the induction AC motors.