Answered: The torque angle of synchronous machine…

The torque angle of synchronous machine operating from a constant voltage bus, is usually defined as the space angle between rotor mmf wave and resultant flux-density wave True False

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter7: Symmetrical Faults

Section: Chapter Questions

Problem 7.21MCQ

See similar textbooks

Related questions

Q: A 1000KVA, 6.6 kV 3 PHASE star connected cylindrical pole synchronous generator has 20-ohm as…

A: The circuit diagram for the synchronous generator is shown below:

Q: (a) A short shunt cumulative compound dc generator supplies 4kW at 220V. The Shunt field resistance,…

A: Find the induced emf of the DC short shunt commulative type generator.

Q: In a long-shunt compound generator, the terminal voltage is 220 V when generator delivers 110 A.…

Q: . Discuss about the excitation system of Synchronous generator.

Q: 6) The differential compound generator has a sharp dropping load characteristics because its…

A: Ans . False

Q: (a) Give comparison between salient pole and non-salient pole type synchronous generator.

A: Note :- We’ll answer the first question since the exact one wasn’t specified. Please submit a new…

Q: The voltage regulation of synchronous generator is defined as the rise in voltage when the load is…

A: Voltage regulation:- it is defined as the measure of change in the voltage magnitude between the…

Q: An 8-pole lap-connected d.c. shunt generator delivers an output of 240A at 500V. The armature has…

A: No. of poles (P) = 8 Armature current (Ia) = 240 A No. of armature conductors (Z) = 1408 No. of…

Q: OC test is performed at zero armature current and SC test at reduced flux False True

A: In short circuit test on transformer, LV side is short circuited and supply is given to HV side.…

Q: Discuss the double field revolving theory and discuss the equivalent circuit diagram of single phase…

A: Single phase Induction Motor are also known as Fractional kW motors. It is commonly used in…

Q: A 1000 kVA, 6.6 kV, 3-phase star connected cylindrical pole synchronous generator has a synchronous…

A: Given values are - S=1000kVAVt=6.6kVXs=20ohmUnity power factor.cosϕ=1

Q: The steady state stability limit of a synchronous machine connected to infinite bus is 2.2 p.u.…

A: Given: The steady state stability limit of synchronous machine, Pss=2.2 p.u. The infinite bus…

Q: Example 2: The stator of a 30 , 8-poles machine has 96 stator slots and short-pitched by 9/12. The…

A: To findVLVph Fundamental Voltage = V3rd Voltage = 0.30V5th Voltage = 0.15V

Q: How does field distortion affect commutation ? ( DC GENERATOR QUESTION)

A: The armature reaction cause the alteration with the main field and cause the demagnetization or the…

Q: scuss the importance, advantages and disadvantages of generator.

A: The explanation is as follows.

Q: For a conventional salient-pole Synchronous Machine obtain the voltage equations for each winding in…

Q: Explain the working principle of the asynchronous generator. please write the answer with…

A: Asynchronous Generator: A single induction machine can be used as an induction…

Q: Q10. In quadrature field theory, the instantaneous direction of flux caused by the speed-voltage is…

A: The given statement is True because of Faraday’s First Law Any change in the magnetic field of a…

Q: Figure Q2(a): Synchronous Generator (i) Name the type of synchronous generator as shown in Figure…

A: A synchronus generator is a synchronus machine which converts mechanical power into AC electric…

Q: Load characteristic of DC generator is a graph between Il and Vt. True or False

A: The load characteristics of a dc generator gives the relationship between the line current and…

Q: give one example of asynchronous generator and its operation and characteristics

Q: a- Compare the excitation of 3-phase induction and synchronous machines.

A: As per the policy, I can attempt only one individual question at a time. Compare the excitation of 3…

Q: A 100KVA, 6.6 kV 3 PHASE star connected cylindrical pole synchronous generator has 20-ohm as…

A: Given: A 100KVA,6.6kV 3 PHASE star connected cylindrical pole synchronous generator has 20-ohm as…

Q: A 100kW generator, 250V, 6 poles have a wave wound armature with 300 turns then the number of…

A: The solution can be achieved as follows.

Q: does not the generator voltage increase when the excitation current (Ie) increases over the

Q: a) Explain the principle operation of synchronous generator.

Q: Explain vector grouping of transformers with suitable diagrams. Mention its usefulness.

A: The three-phase transformer can be imagined as a three single-phase transformer having a common…

Q: Determine the flux per pole for 6 pole dc machine having 240 wave connected conductors, which…

Q: this behavior using its torque-speed curve.

A: Please find your answer below in step 2

Q: 1. Which of the component of IM is usually fabricated out of silicon steel? 2. In an induction…

Q: (a) A short shunt cumulative compound dc generator supplies 8kW at 235V. The Shunt field resistance,…

A: In this question we need to find a Induced EMF and load resistance of a short shunt compund genrator

Q: Explain compound DC generator, also describe its types and terminal characteristics of compound DC…

A: As we know that generator is a electrical device which is use to convert mechanical energy to…

Q: 6. Explain double revolving field theory.

Q: A 300 MVA, Synchronous generator has a moment of inertia 49000 Kg-m2 and Kinetic Energy 2300 MJ.…

Q: Electrical Engineering Consider a balanced 3-phase current flowing into the stator of a 2-pole…

Q: ineed conclusion for this topic( improvement of transient stability by using turbine fast valving…

A: Turbine fast valving method : Fast valving is a means of reducing turbine mechanical input power…

Q: Explain Compound DC. :- generator, types also describe its and terminal characteristics of compound…

Q: E = K,ONvolts-where NIS Example 8.8. Afour-pole generator, having wa ve-wound armature winding has…

A: The solution is given below

Q: Explain compound DC generator, also describe its types and terminal characteristics of compound DC…

Q: 6.10 draw a developed diagram covering two poles of a large machine that has interpoles as well as…

A: The inter poles are the narrow poles which are placed exactly in midway of the main poles. They are…

Q: Under transient conditions, where short circuits at the generator terminals, the flux linkages with…

A: Short circuit of synchronous machine Under short circuit condition armature reaction of synchronous…

Q: a) Explain how the power flows in an induction machine, where losses occur and how they can be…

A: NOTE:- As per our company policy, experts are allowed to answer only 1 Q. at a time. So please…

Q: Two generating units rated for 500 MW and 400 MW have governor speed regulation of 6.0 and 6.4…

A: Here speed governor is given and we need to find new speed governor at 1000MW base

Q: A long shunt generator delivers 25kW at 220V. The shunt, series and armature resistances are 50ohms,…

Q: 3) Why Ego is not equal to zero at If=0 in separately excited do generator?

A: Need to find Eg0 is not equal to zero at If=0 in separately excited DC generator why

Q: can we apply the principle of electromagnetic induction in a Transformers operation? (short answer)

A: Electromagnetic induction : According to electromagnetic induction whenever there is a change in…

Q: A four pole wave wound armature of a DC machine has 500 conductors and flux per pole of 12 mWb. Find…

A: Dc generator convert mechanical energy in to electrical energy. It works on principle of Faraday's…

Q: Draw voltage phasor diagrams for different load cases of salient synchronous generators and derive…

A: Synchronous generators are used for power generation. The power factor shows the phase relation…

Q: 1- How will the no-load voltage of a DC generator change with increasing excitation current? And…

A: Answer How will the no load voltage of a DC generator change with increasing excition current and…

Question

The torque angle of synchronous machine
operating from a constant voltage bus, is
usually defined as the space angle between
rotor mmf wave and resultant flux-density
wave
True
False

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: given data

VIEW

Step 2: solution

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

For operation at 60 Hz and a given peak flux density, the core loss of a given core is 1W due to hysteresis and 0.5W due to eddy currents. Estimate the core loss for 400-Hz operation with the same peak flux density.
3 For a coil, each turn faces (2t4 – t³ – 2t) milliwebers of flux. The value of induced EMF in coil for 100 turns coil at 2 sec is, (in Volts).
Define electronegative gases and Compare between SF6 and 02 Insulator? Explain the different schemes for cascade connection of transformers for producing very high ac voltages?
(4)In salient-pole machines, the flux-density wave produced by the direct-axis mmf is ( ) A)saddle-shape wave. B)quasi-truncated sinusoidal wave. C) sinusoidal wave. D) rectangular wave.
Describe how duty cycleis generated by saw-tooth and sinusoidal modulating signal and compare their performance.
A transformer has primary and secondary turns of 1250 and 125 respectively. It has core cross-sectionof 36 cm2 and its rms flux density is to be limited to 1.4 T (to prevent core saturation). Whatmaximum 50 Hz voltage can be applied on the primary side and the corresponding open-circuitsecondary voltage?The core has a mean length of 150 cm and its relative permeability can be assumed to be 8000. Whatwould be the rms exciting current when the transformer’s primary winding is excited at a voltage ascalculated above? Also calculate the magnetizing susceptance as seen from primary and secondarysides.If the transformer were to be excited at 60 Hz, 1. What should be the maximum primary voltage for thecore flux density limit not to be exceeded? 2. What would be the magnetizing susceptance as seen oneach side in this case?
What is use of solenoid coil in the pressure to converter? a. To produce magnetic field in the LVDT b. To change the LVDT output c. To bring back the pivoted beam normal position d. To produce linear displacement in bellows
-4 poles-26 conductors-double layer-simplex wave winding Can you do this in "armature winding"? Thank you.
(a) Explain briefly what is fringing effect and leakage flux. (b) A ferromagnetic core is shown in Figure 1. The depth of the core is 10 cm. The other dimensions of the core are as shown in the figure. By assuming the magnetic leakage to be negligible and relative permeability of the core is 800. Calculate the total reluctance and find the value of the current that will produce a flux of 0.01 Wb. With this current, calculate the flux density at the top of the core 20 cm 40 cm 10 cm, 30 cm 500 turns 30 cm 30 cm Figure 1
Q.4/ choose true or false: 1. The reluctance of any core is proportional directly with the length of it and inversely with both the permeability and the cross-section area of it. 2. The number of parallel paths in wave windings is equal to twice of the number of poles. 3. In dc machines with same values of Z, N, Ø, the emf for wave winding type is more than emf of lab winding type. 4. If we insert a current in such a conductor subjected to a constant magnetic field, a movement will achieved giving the principle of electric generator.
The .. of the hysteresis loop is a measure of energy ..... lost per cycle a) area. b) Type. c) Frequency d) No one of the above. Fringing effect is a phenomena occurs in . a) Transformers. b) Electrical field. c) Air gap d) All of the above.
The step down DC chopper uses DC source voltage V(dc) = 200 V and resistive load impedance of 10 ohm. The duty cycle is 0.4 the voltage drop across the switch may be taken as zero, Calculate : (a) Average and RMS value of output voltage. (b) Average and RMS value of output current.