e) What causes frequency variations in the power system? What determines the direction of frequency change? How?

Q: Describe how attenuators are used to adjust TV signals power and also reduce interference.

A: According to the question, we need to describe how attenuators are used to adjust TV signal power…

Q: What are the main effects of losses on the performance of the alternator?

A: Alternator- An alternator is an electrical machine that can convert mechanical input to electrical…

Q: b) Briefly explain TWO (2) disadvantages of low power factor.

A: 1. Increases the conductor size For  Three Phase AC Circuit the power  = P = √3 V x I CosФ So…

Q: what The parameters of the synchronous generators?

A: Following are the parameters for the synchronous generators- per phase stator winding electrical…

Q: What is Excitation system and name its types?

A: Any power system which consist several protective and control unit  is required DC power through…

Q: What happened to the no-end voltage of the alternator and the voltage drop and regulation in…

A: Concept: The variation of terminal voltage with load power factor for an alternator is given by the…

Q: Advantage of DC transmission over AC.

A: A high-voltage,DC electric power transmission system uses DC for the bulk transmission of electrical…

Q: What is dc and what is ac ?

A: Electricity can flow in two directions, alternating current (AC) or direct current (DC). The passage…

Q: (c)Derive EMF Equation of the DC generator

A: Let ∅ = flux per poleZ = total armature conductorA = number of parallel pathP = number of polesN =…

Q: Explain the construction working principle and derivation for the emf induced in a DC generator.…

A:

Q: 2 Define the term open circuit (no load) and short circuit of a synchronous generator in general.

A: Open circuit of a synchronous generator : When the load on a synchronous generator is open circuit…

Q: 2. Is it desirable to have leading power factor loads? Why?

A: Obviously, it is always desirable to have a power factor lead so that the power factor of the system…

Q: What will happen when a generator suddenly fails while in operation a. System frequency will…

A: There are a lot of generators in the generating unit to meet the load requirements. If a generator…

Q: Kindly explain the methods of reactive power compensation in power systems.

A: The methods for reactive power compensation are nothing but the methods by which poor power factors…

Q: Discuss about Generator modeling in transient stability and derive the formula for the real and…

A: In transient stability analysis of the generator, because of large disturbance linearisation of…

Q: Explain what is a stiff supply system ? What is its importance in harmonic environment? ARC

A: To explain the stiff supply system

Q: Describe constant and variable frequency operation of chopper control. Describe how duty cycle is…

A:

Q: Write a note on capacitive compensation for power factor control.

A:

Q: Explain how power factor of a system can be improved?

A: The following devices and equipment are used for Power factor Improvement. Static Capacitor…

Q: Explain the advantage of having high power factor in a supply system.

A: As High power  is power is better than low power factor  considering the consumer as well as the

Q: Name three advantages of AC transmission in comparison to DC transmission. What are the units of…

A: Given & to find: Name three advantages of AC transmission in comparison to DC transmission What…

Q: 5. Why the efficiency of large size alternator should be larger than that of small size?

A: Because conducting material have wide contact with atmosphere in large size alternator, the heating…

Q: How

A:

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

A:

Q: Plot the external and internal characteristics of shunt generator

A: To plot the internal and external characteristics of the DC shunt generator.  The external…

Q: Explain in details how the separately-excited de generator works?

A:

Q: Draw the circuit diagram of self excited DC shunt generator, mark all current and voltages and write…

A: A shunt generator is a type of direct current electric generator in which field winding and armature…

Q: What do you think is better? AC or DC? Explain why.

A: Consider that the ac power is used for transmission over long distances as the power conversion…

Q: What is the effect of variation of speed on build up in generator shunt

A: In a DC generator, the relation between generated voltage or build-up voltage and speed is given by,…

Q: What is voltage stability? How is reactive power linked with the voltage stability in the power…

A: Voltage stability is characterized as the capacity of the power system to support fixed passable…

Q: What will be the frequency (in Hz)  for 100kW, 230V, 12-Pole, alternator running at 12 rps?

A:

Q: onstruction, o

A: AC GENERATOR: AC generator is an electric  generator that converts mechanical energy to electrical…

Q: b) at half the speed. The output voltage is now 190 V The actual wind speed is lower than rated, so…

A:

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 how does frequency change versus active power load change?  which part of turbine governing…

A: The power systems include the heavy duty machinery and processes which are required to be monitored…

Q: in short write a note on capacitive compensation for power factor control?

A:

Q: Briefly explain TWO (2) disadvantages of low power factor.

A: Power factor angle (φ) is the angle between the voltage (V) and the current (I)

Q: v) Define the term of degree of compounding in DC generators. What are the applications of different…

A: Degree of compounding is defined by the number of turns in series field winding and shunt field…

Q: 1. i)What are the different ways to supply DC power to rotor of an alternator? Which method is…

A: Supplying of DC power to the rotor of an alternator is called as excitation. In small size…

Q: When an induction motor and a heater are supplied from a phase controlled single-phase ac voltage…

A: Electrical machines can be AC or DC machines. They can be either motor or generators. The electrical…

Q: Two alternators rated 400 MW and 600 MW are operating in parallel. The droop  characteristics of…

A: The solution is given below

Q: What are the causes and disadvantages of low power factor?

A: Causes Of Low Power Factor- A poor power factor can be the result of either a significant phase…

Q: How to select the most economical power factor for a system?

A: Power factor is the ratio of real (true) power utilized in a system to the apparent power delivered…

Q: Q#3. Discuss the operating principle of wind turbine? In what manners the frequency and amplitude of…

A: Wind Turbine converts the Wind energy into Mechanical  Energy(Rotation of Rotor Blades). This…

Q: 4. What do you mean by stray load loss of an alternator?

A: stray load loss of an alternator

Q: Q5) discuss two only : a) the frequency of an alternator. b)what is the disadvantages of split phase…

A: Electrical machines can be either generator or motors. They can be either Ac machines or DC…

Q: what is excitation control in power system?

A: The fundamental capacity of an excitation framework is to give a persistent (DC) current to the…

Q: What is power loss

A: Most of human energy requirement is meet by generating electrical energy. Once electrical energy is…