Technician A says an alternator rotor uses semiconductor components to recti the direct current to alternating current. Technician B says a stator winding for a light vehicle alternator will usually be connected in a 'star' formation. Who is right? 1. A only. 2. B only. 3. Both A and B. 4. Neither A nor B.

Q: Explain why the alternators are never solidly grounded? How the short circuit current is limited in…

A: Alternators are the important parts of electrical machines and power systems in terms of power…

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: What is the name of the voltage when the field current is zero of the open circuit of the DC…

A: In DC generators, there will be voltage present in the machine even when field current is zero.

Q: Identify test/tests is applicable only to Salient pole type of Alternator. O a. Blocked Rotor test O…

A: In this we will write about test applicable for salient alternator...

Q: What should be done for the altemator to take active power (load) on synchronous alternators? Devir…

A: To take active power on synchronous alternator

Q: Question: In Dc chopper,the input voltage waveform is and the output voltage waveform is Option 1:…

A: In this question, choose the correct options What is input voltage waveform and what is output…

Q: 2.a) 50 hz induction motor has 2 poles and run at 2,850 rpm. What is the percent slip?

A: Given, An induction motor has, Number of Pole, P = 2 Rotor speed, NR=2,850 rpm

Q: A 3-phase induction motor running with 25% slip takes 100kw from the mains. If the stator copper…

A:

Q: An auxiliary phase winding is used in a single-phase fractional horsepower motor to A. decrease flux…

A: In this question we will write about auxiliary phase winding.....

Q: What is the effect of the capacitive load to the terminal voltage of the alternator?

A: It is known that capacitive load supplies leading reactive power in any circuit. and the apparent…

Q: b. The apparent power absorbed by the resistor c. The peak power absorbed by the resistor d. The…

A:

Q: What are the mechanical components of a single phase motor?

A: What is single phase motor? A single-phase motor is essentially a rotating device that runs on…

Q: What are rotor faults in alternators

A: The rotor of an alternator is directly connected with field winding of the alternator whenever there…

Q: 7- Does the frequency of the generated voltage depend on the rotor speed? Explain. 8- Draw the…

A:

Q: 3-phase IM has a slip of 5% and a full load current of 16A. The rotor is connected in star and the…

A: In this question we will find rotor power loss in induction motor....

Q: which of the following is sometimes referred to as the motor secondary of a 3 phase induction motor…

A: In 3 phase induction motor supply is given to stator from stator power is induced in rotor through…

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: An asynchronous generator can normally be started (a) Off-line (must be disconnected from the grid)…

A: Induction generator Induction machine when used as generator then its is called as a induction…

Q: A three-pole three-phase alternator is rotating at 1200 rpm, what is the output frequency? (Insert…

A: In this question we will find output frequency....

Q: Q2: b- Explain how does the three- phase induction motor work?

A: INDUCTION MOTOR: Based on the rotor construction, the induction motor is classified into Squirrel…

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: "The series field winding of a 170 kW, 250 V, 1450 rpm compound generator has a resistance of…

A: The series field winding of a compound generator has the given value Power Pl=170 kW=170000 W…

Q: In an On-Off AC Voltage controller, the ON time is 50 cycles and duty cycle is 0.25. The OFF time…

A: Let M be the number of on cycles and N be number of off cycles. Duty cycle=no.on cyclesno.on…

Q: Identify the machine where the Rotating magnetic field is produced. a. Three Phase Induction Motor…

A: We need to Identify the machine where the Rotating magnetic field is produced. a. Three Phase…

Q: The back emf of a dc motor

A: The explanation is as follows.

Q: What is the effect of an unbalanced load on the output voltage of an alternator?

A: The explanation is as follows.

Q: The synchronous generator excitation system...

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

Q: WHAT ARE THE TWO TYPES OF AN ALTERNATOR WITH REGARDS TO THE CONSTRUCTIONS AND ITS APPLICATION

A: The solution is given below

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: What causes sparking at the brushes

A: In this question, we need to discuss about the cause of the sparking at the brushes.

Q: A 10 pole alternator has an armature wound with coils having 16/24 fractional-pitch. Calculate the…

A: The objective of the question is to calculate the pitch factor of an alternator with given…

Q: 3. Two similar single phase alternators are operating in parallel. The armature winding resistance…

A: In parallel connections circulating current flows from leading angle to lagging angle, assume that…

Q: For alternator having fractional pitch winding of 10/15 the coil span is O 2.09 O4.71 O 120.00 O…

A: The conductors in the machine are in the form of coils, which form turns . The coils can be single…

Q: diode trio

A: A diode trio used in an alternator is to provide internal power to the rotor. Once the alternator…

Q: QUESTION 21 An alternator is generating power at 210 V per phase while running at 1500 rpm. If the…

A: We need to find out the generated emf at given speed .

Q: 5. What is the name of 0.Cgenerator field? A. Short shunt compound generator B. Long shunt compound…

A: The field winding of the Dc generator is shown below:  There are two distinct windings hence it is…

Q: What will be the frequency (in Hz)  for 100kW, 230V, 12-Pole, alternator running at 12 rps?

A:

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: 1. stator windings are connected in _____ types 2. Circuit resistance is checked by connecting a(n)…

A:

Q: 18. The speed at which a 6-pole alternator should be driven to generate 50 cycles per second is. (i)…

A: Given, Speed of the alternator, Ns=? Total number of pole, P = 6 Frequency, f = 50 cycles = 50 Hz

Q: common types of electrical failures of an AC induction motor

A: Electrical failures in AC induction motor is occurred when the insulation of winding get damaged ,…

Q: What will be done to keep the alternator end voltage constant, which changes as the alternator is…

A: To keep the alternator end voltage constant which changes as alternator is loaded at different…