Explain the improvement of transient stability by using turbine fast valving method.
Q: Why the sub-transient current of generator is high at the time of symmetrical fault?
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Q: 2 Define the term open circuit (no load) and short circuit of a synchronous generator in general.
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Q: Explain the improvement of transient stability by using high speed excitation system
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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…
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Q: Can you explain regarding shunt reactor and shunt capacitor?
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Q: 2- Starting method for three phase synchronous motor
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Q: a) Explain the principle operation of synchronous generator.
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Q: (a) Sketch the equivalent circuit and obtain the general equation for synchronous generator
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Q: Q#3 : How transient stability limit can be increased?
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Q: 1. What are the reasons of drop of terminal voltage due to load in alternator?
A: NOTE :- As per our rule we’ll answer the first question since the exact one wasn’t specified. Please…
Q: Explain the improvement of transient stability by using turbine fast valving method) (i need…
A: Transient Stability: It is the ability of a power system which helps to experience a sudden change…
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…
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Q: (c) What techniques are used to minimize induction motor core loses?
A: technique to minimize the core loss of induction motor.
Q: 4. What do you mean by stray load loss of an alternator?
A: stray load loss of an alternator
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- What is transient stability in power system?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 bellowsThe mass of the stator core laminations is approximately 465 kg. The specific loss in the laminations at 1.5T and 50 Hz is 3.5 W/kg. The hot stator winding resistance is 5 mn. (a) Estimate the stator core loss. Assume the maximum lamination flux density is 1.65 T.
- ineed conclusion for this topic( improvement of transient stability by using turbine fast valving method)Turbine types generally can be classified into two main typesAnswer........A thicker wire is used in the DC series field winding than DC shunt field winding in DC machines. * O because it carries the load current. O to prevent mechanical vibrations. O to provide strength. O to produce large flux. The speed of a DC motor can be changed by varying - armature resistance circuit O flux per pole O voltage source O all of above
- A 220 V , 60 Hz , supply is connected to 200 – turn armature winding of reluctance 1.7x105 At / Wb . Find the magnetizing reactance , the rms values of the ( magneto – motive force , exciting and armature currents , magnetic flux ) , and the inductance Draw the phasor diagram of the circuit .A 220 V , 60 Hz , supply is connected to 200 – turn armature winding of reluctance 1.7x105 At / Wb . Find : the magnetizing reactance the rms values of the ( magneto – motive force , exciting and armature currents , magnetic fluxflu the inductance Draw the phasor diagram of the circuitQ3/ A/ Compare between de series and shunt generator. Q3/ B/ Briefly explain the commutating process in dc machine.
- [4] The half wave ac controller has rms output voltage equal to input rms Vs at.......... (5] In single phase bidirectional ac controller, the RMS output voltage can be varied between zero to.............. of input voltageA three-phase, 4-pole, 1,500 rpm alternating having a double layer-windings with 18 turns per coil. The slots per pole per phase are 10 and the coil span is 22 slots. The spread phase is 60 degrees and the flux per pole is 0.0625 Weber. If the armature windings are wye connected. a) Determine the generated voltage per phase and the line to line voltages. b) If the alternator is delivering a three - phase load of 1,200KW at 0.8 lagging power factor what is the line current of the alternatorDraw dc load line :