B- Chose the correct answer:1- The rotor type of turbo alternator is(a) salient pole rotor (b)cylindrical rotor(c) both (a) & (b)(d) none of above2- A synchronous generator is feeding a zero lagging p.f load at rated current. The armaturereaction is(a) magnetizing (b) demagnetizing (c) cross magnetizing (d) ineffective3- A 3 phase, 4pole, synchronous motor has a load angle of 10° electrical. The equivalentmechanical degrees will be(a) 1°(b) 5° (c) 10°(d) 20⁰4- The hunting in a synchronous motor happen when(a) friction in bearing is more (b) air gap is less (c) load is suddenly changed (d)load is constant5-V-curves of synchronous motor represent the relation between(a)field current and speed(b) field current and power factor(d) armature current and field current(c) power factor and speed

{As, per company rules an expert can provide answer for 3 subparts only, pls repost remaining parts…

Answered: alternator

Engineering

Electrical Engineering

alternator

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Related questions

Q: An electric motor with a power factor less than 1 and lagging has a reactive power component a)…

A: Power factor<1 Lagging power factor

Q: Discuss the significance of SCR in designing an alternator

A: In this we will write about short circuit ratio..

Q: Which motor cannot be started on no load none of the above O shunt motors O series motors O…

A: Given: The motor cannot be started on no load is determined as, None of the above Shunt motors…

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: 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: A single phase 240V, 2.5Hp induction motor draws 12A and consumes 2.4KW. Determine motor power…

A: True power =2.5 Hp =2.5×746=1865 Watt Apparent power = 2400 Watt Calculate power…

Q: Determine the frequency of oscillation if the duty cycle D=20% and 1 ms. - - T the ON period T

A: Those function which repeat itself after a fixed interval of time is called periodic function. A…

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: iii. Induced emf in the coil if the current fall from 3A to 1A a. 420V b. 620V c. 0.62V d. 0.42V

A: Put the given inductor value L and change in time

Q: The power input to the 3-phase induction motor is 50 kW and the corresponding stator losses are 1…

A: Given- A 3-phase induction motor- Power input=50 kW, Stator losses = 1 kW, Slip s=4%=0.04, To Find-…

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: What are rotor faults in alternators

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

Q: The given pic is a single phase motor equivalent circuit I1 is the input current or the stator…

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

A: The solution is given below

Q: Which of the following is the rotor fault of alternator? Phase to earth Over current Inter turn Non…

A: Choose the correct option Which of the following is the rotor fault of alternator?

Q: operating frequency

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

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: A low duty cycle will indicate; Low peak power High Average power Low Average power High…

Q: Two synchronous generators are running in parallel. If the field of one of the alternator is…

A: Answer: Option:a Change in its power factor

Q: ompare between 2-phas notor and universal moto

A: On the basis of the construction and working principle there are various types of motors like…

Q: diode trio

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

Q: 11. The variation of generated voltage of AC Generator can be varied through a) the speed of the…

Q: The most commonly used relay, for protection of an alternator against loss of excitation is a mho…

Q: I want a report on Characteristic of Self- Excited Shunt

A: In a self-excited generator, the current to the field winding is provided by the generator. and in…

Q: A 3-phase induction motor runs at 3% slip and develops mechanical power equal to 10 kW. The air gap…

Q: At start the slip of an induction motor is equal to O 0.75 00 O 0.5

A: At starting the rotor speed of induction motor is zero. Nr=0 Let a induction motor with synchronous…

Q: Find the desired ones since the rotating field speed of an asynchronous motor with a frequency of…

A: Rotating field speed of an asynchronous motor with a frequency of 50Hz is 750 rpm a) to find the…

Q: A six pole synchronous generator operates at 60 Hz. Find the speed of operation

A: It is given that:

Q: Leakage reactance of the machine is included in the armature reaction reactance in Magneto Motive…

A: Need to find true false

Q: The difference between synchronous motor and induction motor

Q: As the torque on synchronous motor increases, the motor speed O a reduces O b. remains constant Oc…

A: Synchronous motor speed = synchronous speed =…

Q: Tell us what you know about diesel electric locomotive

A: A diesel locomotive is a type of railway locomotive in which the prime mover is a diesel engine.…

Q: List various kinds of faults that may occur in an alternator

A: There are two types of faults occuring in an alternator. These are A) Internal faults B) External…

Q: The power system runs under synchronism means: O a. All series generators should run at same speed O…

A: In a conventional power system where centralized generation approach is followed, in which power is…

Concept explainers

Speed control of motor

Speed control by DC motor-speed controller is required to realize variable speed drive. Whenever a motor drives a particular load, it is called drive, and variable speed drive refers to a load requiring variable speed. All this is obtained by a DC motor speed controller.

Question

B- Chose the correct answer:
1- The rotor type of turbo alternator is
(a) salient pole rotor (b)cylindrical rotor
(c) both (a) & (b)
(d) none of above
2- A synchronous generator is feeding a zero lagging p.f load at rated current. The armature
reaction is
(a) magnetizing (b) demagnetizing (c) cross magnetizing (d) ineffective
3- A 3 phase, 4pole, synchronous motor has a load angle of 10° electrical. The equivalent
mechanical degrees will be
(a) 1°
(b) 5° (c) 10°
(d) 20⁰
4- The hunting in a synchronous motor happen when
(a) friction in bearing is more (b) air gap is less (c) load is suddenly changed (d)load is constant
5-V-curves of synchronous motor represent the relation between
(a)field current and speed
(b) field current and power factor
(d) armature current and field current
(c) power factor and speed

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1: The rotor type of turbo alternator is

VIEW

Step 2: A synchronous generator is feeding a zero lagging power factor load at rated current.

VIEW

Step 3: A 3 phase, 4 pole, synchronous motor, the equivalent mechanical degree will be.

VIEW

Solution

VIEW

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

C is correct option
is the minimum operational speed of the wind turbine maximum speed O cut out speed rated speed O cut in speed
the student will be able to learn the concepts of a 3 phase synchronous motor.
A synchronous motor rotating at 900 rpm, is used as the prime-mover of the generator that have four-pair of magnets. Compute the frequency of the generator
A 10 pole 25 Hz alternator is directly coupled to and is driven by 60 Hz synchronous motor. What is the number of poles for the synchronous motor?
Inductive and synchronous motors are connected to 240 V power supply. Inductive motor draws 40 A and has power factor 0.85 lagging. Synchronous motor draws 30 A and has power factor 0.65 leading. Find for each motor: 1. Watts 2. VA 3. VAR
block diagram fro dc motor electric oven
A three-phase, four-pole, 440-V (line-to-line), 60-Hz induction motor is supplied from a constant Volts/Hertz adjustable speed drive controller. The motor has a magnetizing inductance of 80 mH per phase and an effective rotor resistance referred to the stator side of 0.4 per phase. Leakage reactances and stator resistance may be neglected.
Which of the following is not used in Diesel turbine power plant? O Injection pump O Spray Tank O Turbine O Compressor
2. A 60- cycle engine- driven alternator has a speed of 20 rps. How many poles are there in the alternator? a. 1.5 b. 6 C. 40 d. 360