TI T2 M 50 +j 100 ohm AY YA Lood

Q: A 50 MVA, 11 kV synchronous generator has internal reactance of 0.8 Q. The generator is connected to…

A: In this question we have to find out per unit impedance of generator when connected to new power…

Q: The single line diagram of figure below shows a generator connected through parallel transmission…

A: when a 3 phase fault occurs at any of the middles of one of the transmission line then the…

Q: A 33 MVA, 13.8 KV, 3-phase generator has a sub transient reactance of 0.5%. The generator supplies a…

A: One line diagram with the data is obtained as shown in figure,

Q: A: A synchronous generator of supplies a motor of 50 MVA, 22 kV, and 0.2 pu transient reactance. The…

A: A synchronous generator of 100 MVA, 22 kV, and 0.25 pu transient reactance supplies a motor of 50…

Q: Q6. Q7. Q8. Q9. When identical partially loaded AC generating units are operating in parallel on…

A: Power system:- It is an interconnection of electrical equipment which is used for power generation,…

Q: Q2:- a synchronous generator is 25 MVA, 11kV, it is star- connected with the neutral point solidly…

A: Given:X1=X2=0.2puX0=0.08pu   Consider power base is 25 MVA and voltage base is 11 KVVoltage PU =1

Q: Q2 Two three-phase, 6.6 kV, Y-connected synchronous generators are operating in parallel to supply a…

A: Given:Vt=6.63kV=3810 VZA=j10ΩZB=j12ΩTotal load of 3000 kW at 0.8 p.f. laggingPT=3000 kWQT=3000…

Q: 14 Open- and short-circuit test has been performed of a synchronous machine 45-kVA, three- phase,…

A: Unsaturated synchronous reactance is calculated using Vph on airgap line and armature current at…

Q: Which of the following methods is more complete in modeling the characteristic curve of current…

A: The Radke curve equation is shown below:  logT-DC=a0+a1logM+a2logM2+a3logM3+a4logM4T=Time for the…

Q: A three phase synchronous generator with negligible resistance and Xs=20 ohm has induced voltage as…

A: Given: Per phase quantities, Induced voltage E=230 VTerminal voltage V=230 VSynchronous reactance…

Q: Why oncoming generator’s frequency needs to be slightly higher than running system frequency in case…

A: Whenever the load on the system increases, one generator is insufficient to meet the demands and…

Q: Two shunt generators, A and B, are to be operated in parallel to supply a common load. Generator A…

A:

Q: Q2 Two three-phase, 6.6 kV, Y-connected synchronous generators are operating in parallel to supply a…

A: Solution of this question discusses about concept of parallel operation of an alternator & its…

Q: Q3: A synchronous generator with peak generated voltage Vg which is connected to a lighting arrester…

A: Equivalent per phase diagram Apply KVL in loop 1)

Q: 480V, 375 kVA, 0.8 lagging power factor Y - connected synchronous generator has synchronous…

A: solution:480v; 375kvA; Xs=0.4; Xs=1.1Ωa) Ea for both machinesIam=Ilm=P3VT…

Q: b) A 300 MVA, 20 kV three-phase generator has a sub-transient reactance of 20%. The generator…

A:

Q: 1 MVA, 11kV,three-phase wye-connected synchronous generator has a synchronous reactance of 5 ohms…

A:

Q: The effective armature resistance of a 3-phase, star connected, 500 kVA, 1100 V alternator is 0.1 £…

A:

Q: The impedance transformation equation for 3-winding IT.

A: Three winding transformer- Three-phase transformer work on the principle of Faraday's law of…

Q: polyphase system is generated by______?   a.Both a and c b.Having two or more generator windings…

A: poly phase AC circuits:Poly phase  circuits are important because of all electric power is generated…

Q: In single phase system, the performance of motor produces the uniform torque.   Select one: True…

A: We need to tell about the given statement is true or false.

Q: The DC shunt generator with the terminal voltage 300 V, armature drop 8 V and the total brush drop 2…

A: Generated EMF = Terminal voltage+ armature drop + Total btush drop. Power in 3 phase = 3×Line…

Q: Question:4 (CLO:1) (a) A single phase generator circuit with load and prime mover is shown in…

A: Part (a): From the circuit diagram, the equation is obtained after applying Kirchhoff's voltage law…

Q: A 3-phase synchronous generator, rated 16 kV and 200 MVA, has negligible losses and synchronous…

A: Internal voltage E = Vt + IZ Where  I is current  And Z is impedance

Q: Question 4 In case of N-R method of power flow solution at the generator bus one column and one row…

A: 4) Newton- Raphson method of power flow solution at the generator bus

Q: A 60-Hz synchronous generator having inertia constant H = 5 MJ/MVA and a direct axis transient…

A: Given  f= 60 Hz H=5 MJ/MVA S= Pe+j Q =0.8+ j 0.074 V= 1 pu =1∠0

Q: A 3-phase, 11-kVA, 10-MW, Y-connected synchronous generator has synchro- nous impedance of (0.8+ j…

A:

Q: If 60 MVA, 60 Hz, 2 Pole Synchronous generator running at rated speed has E = 1.35 pu , Xg=0.4 pu, V…

A:

Q: Define derating, why must a 60Hz generator be derated if it is to be operated at 50Hz? Find…

A: sol:   Derating means it is a technique used to operate devices at less than their rated maximum…

Q: A 60-Hz synchronous generator having inertia constant H = 5 MJ/MVA and a direct axis transient…

A:

Q: 7. What is the nature of the generator-load frequency characteristics? 8. What is the effect of a…

A: Load-frequency characteristics: Under equilibrium conditions, but with equivalent primary control…

Q: Ex: Consider a A/Y- Connected, 15- MVA, 33/11-KV transformer with differential protection applied,…

A: Transformer is work on the principle of faraday electromagnetic induction. Transformer is static…

Q: 1000-kVA, 3300-V, three-phase, Y-connected, synchronous generator is operated at rated speed to…

A:

Q: Sketch the complete per-phase equivalent circuit of a symmetrical non-salient pole three-phase…

A: Synchronous generator: It is an electromechanical device. This is called a synchronous generator…

Q: Referring to the rated values of the components in Figure Q.2, draw the impedance diagram with all…

A:

Q: Four similar synchronous generators are sharing equally the feed to a load of 1 pu referred to the…

A: To find the correct option from the given statements

Q: wo shunt generators are operating in parallel and taking equal shares of a 2400 A, 230 V bus load.…

A: Generator is convert mechanical energy to electrical energy . Generator work on a principal of…

Q: A three-phase, 250 MVA, 16 kV rated synchronous generator is feeding into an infinite bus bar at 15…

A: As per the instructions we can solve only first part of ques.  Select motor ratings as base value…

Q: Suppose you have been assigned to find the specs of Merz-Price Current Protection scheme of A star…

A: Given :VL=13.8 kVXS=1.4 p.u.R= 2 ΩS=200 MVA  not define, so assuming

Q: A three-phase, 250 MVA, 16 kV rated synchronous generator is feeding into an infinite bus bar at 15…

A: Given: A three-phase, 250 MVA, 16 kV rated synchronous generator is feeding into an infinite bus bar…

Q: -The symmetrical fault occurs in the terminals of the synchronous generator. Find the direct axis…

A: Find the direct axis transient reactance of the synchronous generator  the transient period for the…

Q: A В C D

A: (a) Protection scheme of one of the transformers connected in parallel. parallel transformer are…

Q: Q3: A synchronous generator with peak generated voltage Vg which is connected to a lighting arrester…

A: 1) Peak value of the generated voltage of the synchronous generator= Vg RMS value of the generated…

Q: 1) A 50 Hz, 3.75 MVA, 3.18 kV, three-phase synchronous generator with rated (nominal) current of In…

A: Unsaturated synchronous reactance When the value of the Field current is lower , then the machine is…

Q: A 33 MVA, 13.8 KV, 3-phase generator has a sub transient reactance of 0.5%. The generator supplies a…

A:

Q: Plot generator output voltage versus load current for operating conditions with and without…

A: Voltage regulator is a circuit designed to maintain constant voltage at the output. The following…

Q: Problem 4: Consider an interconnected 50-Hz power system that contains four turbine-generator units…

A: The solution can be achieved as follows.

Q: A1 MVA, 11 KV, 3-phase wye- connected synchronous generator has a synchronous reactance of 5 ohms…

A: The solution is given below

Q: While preparing COPT, if identical generators are available in the system, it will follow rule a.…

A: In this question we need to choose a correct option.

Compensation Techniques

The compensation techniques are the methods that are employed in the electrical control systems to enhance the performance of the system. The performance are generally affected by the factors like lag in the compensating devices, slow response of the system of the components like sensors used in the control system. The basic compensation technique involves lag compensation, lead compensation or the combination of the both.