In a synchronous generator, choose what happens to number of poles if the value of frequency is increased O a. The number of poles will decrease O b. The number of poles will be doubled O c. The number of poles will increase d. none of these options

In a synchronous generator, choose what happens to number of poles if the value of frequency is increased O a. The number of poles will decrease O b. The number of poles will be doubled O c. The number of poles will increase d. none of these options

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter33: Single-phase Motors

Section: Chapter Questions

Problem 36RQ

See similar textbooks

Related questions

Q: 1. The magnitude of the resultant flux in three phase supply system is equal to (a) Pm (b)m (d) Фт…

Q: Vith aid of diagram, derive and proof that the internal generated voltage of a synchronous generator…

Q: The synchronous generator of thermal power station will have a large number of poles O True False

A: In thermal power stations, the rotor which is used is a cylindrical rotor. In cylindrical rotor the…

Q: Which one not related to Synchronous Generator a. Commutator b. Rotate field c. Damper Winding…

A: Synchronous Generator or Alternator :- Basically synchronous generators are 2 type i.e salient pole…

Q: True or False: The voltage at the shunt field in a long-shunt generator is the same as the load's…

Q: 4.1Two synchronous generators need to be connected in parallel to supply a load of 10 MW. The first…

A: The solution is given below

Q: 5- A 6-pole lap wound generator has 450 conductors; the em.f. induced per con generated voltage of…

A: Given that number of conductors (z)=450Emf induced per conductor =4VNumber of poles=6number of…

Q: onous reactar transformers are operating in parallel, they will share the load as ous motor is…

A: In this question we will write about synchronous machine related answers.....

Q: cance is X = ault occurs at the generator terminals. 0.20 pu. The generator is operating at rated…

A: In this question we will find magnitude of the steady state per phase fault current ...

Q: In the stator winding of a synchronous generator, the chording angle is for eliminating fifth…

A: Given, In the stator winding of a synchronous generator, the nth harmonic n = 5

Q: EMF/turn is constant for both primary and secondary windings. Select one: O True O False

A: Choose the correct option Emf/turn is constant for both primary and secondary winding. Is it true…

Q: In a synchronous generator *

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

Q: 9. Two alternators each having 4% speed regulation are working in parallel. Alternator 1 is rated 12…

A: Given that two alternators are in parallel. Speed regulation of alternator is 0.04. R in pu=0.04 For…

Q: As a synchronous generator power rating increases.,... a) The ratio between its output power to…

Q: The terminal voltage of a dc series generator running at rated speed and no load is equal to * rated…

A: DC series generator at No load, there will be No armature current.…

Q: A 6-pole lap-wound generator has 300 conductors; the e.m.f. induced per conductor being 5 V. The…

A: Generated voltage of DC machine = Conductors per parallel path * voltage in one conductor .…

Q: The synchronous generator will have its voltage and frequency depend on OField current and speed.…

A: For synchronous generator, We know, Induced voltage depends on field current , speed of rotor,…

Q: When a generator fails, its power output is lost, and the result is an imbalance between total load…

Q: In cumulative compound DC Generator the shunt field current and the series field current are in…

A: The explanation is as follows.

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: The synchronous generator of thermal power station will have a large number of poles O True O False

A: In thermal power station speed of alternator is very high. Synchronous speed=120×frequencypoles

Q: The theoretical maximum real power generation of a synchronous generator is achieved by: Select one:…

Q: Generators using salient pole structure rotors are called turbo-alternators. Select one: O True O…

A: The explanation is as follows.

Q: 5.When combined with a CSD ,a brushless three phase se AC generator is often referred to as: (a)a…

A: The answer of the following questions are

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: The alternator frequency is direct function of rotational speed and number of poles. O True O False

Q: Name the losses of a d.e. generator and classify them into (i) constant and (ii) variable lasses.

A: DC Generator: DC Generator is an electromechanical device which converts mechanical energy to…

Q: 1. If the number of poles in a lap wound generator is doubled, then the generated emf will be a)…

A: Given: Number of poles in lap wound generator are doubled.

Q: A seperately excited DC generator has a no load voltage of 127 V, Ra= 0.02 ohm and Rsh=15 ohm. Find…

A: Given a separately excited DC generator has, No load voltage of 127 V Armature resistance, Ra= 0.02…

Q: Q) A P-Pole three-phase induction machine with spatial distribution of stator windings is assumed to…

A: We will find that the , two cycles of emf is produced in one complete revolution of conductor.…

Q: Potier reactance of alternator is almost same as O a. leakage reactance of the field winding O b.…

A: Choose the correct option Potier reactance of alternator is almost same as ?

Q: During the test of separately excited generator the speed of rotation must be held constant and the…

A: In the test on separately excited generator, i.e., magnetization characteristics experiment, the…

Q: Draw a complete phasor diagram of a single-phase synchronous generator at a general unity power…

A: In this question we need to draw a phasor diagram of synchronous generator at unity power factor and…

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

Q: 3. What must be the speed of a six-pole 25-Hz synchronous generator? 500 грm a) b) 900 гpm c) 1200…

A: NOTE: “Since you have asked multiple question, we will solve the first question for you. If you want…

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

Q: two synchronous generators are connected in parallel, feeding a load together. the frequency of the…

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

Q: The commercial efficiency of shunt generator is maximum when its constant loss equal . . loss *…

A: Variable losses are proportional to the square of armature current while constant losses are almost…

Q: In Synchronous generator, field is called rotor. Select one: True O False

A: Synchronous generator: It is also called as alternator. It converts mechanical input power to AC…

Q: In synchronous generator, the rotor is called armature. Select one: O True O False

A: A synchronous motor is virtually identical to a synchronous generator. So armature is the stator…

Q: -A long shunt compound generator delivers a e

Q: Draw the phasor diagrams for the following values of the power coefficient, ignoring the armature…

A: Lagging , leading and unity condition are shown in the diagram.

Q: The reactance of the synchronous generator after few cycles of short circuit is

A: In a synchronous generator, During short circuit, the reactance of the windings of the stator is…

Q: Darrieus turbine does not requires guy wires to support. Select one: True O False

A: According to the question we have to discuss about Darrieus Turbine.

Q: Voltage control or regulation in a synchronous generator... a) Is measured in volt/s b) Has a…

A: Voltage control or regulation in a synchronous generator. Which option is correct?

Q: In a synchronous generator, a DC current is applied to the rotor winding List two advantages of this…

A: Synchronous generator:- A synchronous generator is a device that uses electromagnetic induction to…

Q: Q4. Q5. An isochronous governor has a droop setting of: 0% (b) 4% 5% 100% infinity Which of the…

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…

Q: Two 36 AC generators are such that one has twice the linear dimensions of the other. The field…

A: Solution: Let For Generator 1, Length=l1 Diameter=D1 For Generator 2, Length=l2 Diameter=D2…

Question

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

VIEW

Step 2

VIEW

Step by step

Solved in 2 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

What's the rise time for this system with its closed-loop poles as shown? 14 -6 -4 12 -j6 Select one: a. 0.607 sec b. 3.14 sec C. 1.80 sec d. 0.254 seC e. 0.554 sec
How did they draw root locus? P=2? And how they get the breakpoint?
The value of d28/dt2 for a synchronous machine, rated 50MVA, 60HZ, M = 1.06MJ.s/degree, and Pa = 2.5MW, machine is %3D a. 0.424 rad/s2 O b. 3.356 rad/s2 c. 2.358 rad/s2 d. 0.4.356 rad/s2
in phase margin why the phase go down for first time then go up?
In the equivalent circuit, when the slipio 1 Cire at stert) rotor cirouit has much lower impedance than magnetising eircuit. At start approximates to: Iph Cfull) Toad' Ri Vph. craduced) XI+x² Cequele Xea) can be obtained from the input reactive R1+ RZ' CRTeStator Resistance & RZé Ro tor Resistanca) c20 be obtained from the input. powerand current pawer and current Total real power P=3 CIine) CR the) W Total absgrbed nductor reactive pawer Qy = 3E Lined. Xeq VAr The mea sured eddy corrent prake torque O.48 Nm. The line corrent is 4.94A, Total (3ph) inputreal power is 214.7W. The Statorphae resistance is Voltage CVey)s 29.V, stahr What is Xeq, R1+R2, R), R2
- An 8-pole wave -wound d.c generator with output current is 200 A and has ATc/pole = 2600 AT and ATd /pole= 400 AT. Find the number of conductor.
Problem #2: Draw the circuit of a synchronous MÓD-6 up counter.
Find I using TEC
Design Synchronous counter with the sequence given below 1-4-6-7-0-1
1. Set up the circuit shown using a function generator for the source voltage Vs. Set the function generator to 10 V P-P at 100 Hz (You need to set the Vp-p on the function generator to 5V). Connect the red lead of the scope to VoUT and the black lead to the ground to measure the output or load voltage. 1N4004 Vout Vs 10Vpp 100HZ 1k Ohm 2. Sketch Vout on right, measure the exact peak voltage to the ground on the oscilloscope (use the oscilloscope). DC coupling setting of the 主 Note: Show the results on the screen to your professor to get the signature. V out (Peak) = Vout 3. What is the measured frequency of the load voltage waveform? Frequency f =
Vcc 9 Rc Ra VCE OE For the circuit shown above, assume Vcc - 12V, Ra- 330kO, Rc - 1.5kQ, B- 120. Determine the DC operating point. Round your answers to the nearest tenth. VBE = V. VCE
I PERFORm THE FOLLOWING OPERATIONS. (EXPRESS THE ANSWERS IN RECTANGULAR PORM, & Stow THE COMPLET SOLUTIONS). a) (4+j3) C6-je). (34j3) -(2+j3) c) (6 /20°.) (201-46")sjs) 2 30° 2. 860 140 Q LO) +J00 tj400) 3tj9