Explain with neat sketch the operation of regulated DC power supply.

Q: Describe the similarities in the construction of a DC motor and a DC generator.

A: From a mechanical standpoint, a DC motor and a DC generator are quite similar, but from a technical…

Q: How to steam flow control in thermal power plant

A:

Q: what are the types of instruments used for measurement of AC and DC current

A:

Q: WHat is shunt reactor and its use in the power system. Explain in short.

A: The inductive current element is considered as the shunt reactor and it is connected in between the…

Q: WHATS RTC IN ELECTRICITY?

A: The solution is given below

Q: What is the name of the voltage when the field current is zero of the open circuit of the DC…

A: In DC generators, there will be voltage present in the machine even when field current is zero.

Q: List the pins on Arduino that can do analog write.

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: The problem is shown in the image below, v1 = 20 angle 15° volts, V2 = 10 angle -30° volts, V3 = -5…

A:

Q: B// Explain the important functions of the condenser in a thermal power station.

A: Important of condenser    1. The condenser creates the vacuum required for steam to exit the turbine…

Q: (ii) With neat sketch explain the closed loop operation of AC -DC switched mode power supply.

A: AC-DC Switched Mode Power Supply- In buck, boost and buck-boost converter only obtain a little bit…

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: Determine and explain the advantages and disadvantages of using an electric motor as compared to…

A: An electric motor (sometimes known as an electrical motor) is a mechanism that transforms electrical…

Q: Air- cold condensers use? To drive air across the condensing coil.…

A: Air- cold condensers use? To drive air across the condensing coil.…

Q: Every device in a DC, whether a light or electric motor, can be replaced by an electric ________?

A: In DC, light or electric motor can be represented by resistors.In DC, inductor acts as short circuit…

Q: 3. What is the disadvantage of ripple voltage (Peak-Peak) in DC Supply on the electronic instruments…

A: Ripple voltage is an unwanted SC components in a electronic equipments workin on DC supply. This…

Q: What is meant by Excitation Control in a Power System

A: Given :    In the above question they are interested to know the work of the excitation control in…

Q: d by a 300-V dc power supply. What is the output voltage range of this chopper if the duty cycle can…

A: Given data: Input voltage, Vs = 300 V The output voltage of buck-chopper is given as, Vo=αVs Here α…

Q: 10lwhy are 1The graphite or carbon breshes preferred over copper breshes Bor use in DC machines?

A: Carbon has a very high melting point (~3500degC) compared with other conductors. Brushes made with…

Q: What is transient stability in power system

A: It is defined as when a large disturbance take place in power system if the rotor position return to…

Q: A) Explain with a neat sketch the process of solar cooling?

A: Solar Cooling- The solar cooling system is used for refrigeration and air conditioning with the help…

Q: 2- Did you observe a difference in the values of operate and release voltages in case of AC supply?…

A: Contactors in a motor starter use as a switch. This starter serves two purposes: limiting the excess…

Q: why is voltage regulation very critical to dc power supplies?

A: Voltage regulation is defined as the measure of the secondary voltage of the power transformer…

Q: (a) Draw and explain a typical power curve for a wind turbine and write the definition of the four…

A: The solution to both the problems is given below.

Q: Given field excitation at 10A in an alternator that exerts current of 150A (short circuit) and a…

A: The solution is given below

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: Explain in your own words what an Aircraft Alternating Current (AC) System is?

A: An Aircraft Alternating Current AC System  is the network of the generation , transmission…

Q: Why there is a need to study Electrical skill problems?

A: Electrical skiil

Q: d) How to control voltage regulation?

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

Q: EXPLAIN BRIEFLY THE ALTERNATOR USED IN GENERATING STATION?

A:

Q: Which do you prefer the most, DC or AC? Why?

A: AC  Supply is most preferable supply compared to the DC supply. Generation of the electricity away…

Q: Why do we need to have an Exciter in a complete set-up of an Alternator system operations? Explain…

A: A device known as an exciter or a DC generator relay induces the DC machine-held excitation to…

Q: What is the difference between the AC and DC supplies?

A:

Q: Q2. Choose one only 1. How does high load factor reduce the variable load problems on the power…

A: In this question , we will write how does high load factor reduces variable load problems...

Q: Explain any three factors which affect the efficiency of a wind turbine

A: In this answer let us try to understand the three main factors that are affecting the efficiency of…

Q: Consider hydro-electric, thermo electric, and nuclear electric generating methods. Explain one (1)…

A: In this question we discuss about advantages and disadvantage of hydro-electric, thermo electric,…

Q: a) What is skin effect? b) Explain why it is occurring in AC not in DC.

A: (a) Skin effect is the tendency of an alternating current to be distributed within a conductor such…

Q: Introduction and explanation about alternator regulation

A:

Q: e) What causes frequency variations in the power system? What determines the direction of frequency…

A: A healthy power system always operates at a constant frequency. There are two major reasons of…

Q: In a dc chopper, the average load current is 30 A, chopping frequency is 250 Hz. Supply voltage is…

A: Given that, the average load current IL= 30 A, chopping frequency is fs =250 Hz. Supply voltage is…

Q: With neat diagram explain the principle of operation of instrument used for both AC and DC and…

A: For measuring the AC, an induction type single-phase energy meter is used. The circuit diagram for…

Q: Why we do not usually operate AC circuit at max power?

A:

Q: What is the effect of the field excitation to the short circuit current of the alternator?

A: The short circuit current of alternator is given as: Ia=EfjXs Here we have neglected armature…

Q: block diagram of the electromechanical energy conversion of a power tool

A:

Q: explain how you would covert AC to DC power, along with the elements used to do so.

A: Given: AC power to DC power conversion

Q: A nuclear powerplant is rated 1200 MW. It was operating at a base load plant for 150 days in a year…

A: Nuclear powerplant is rated 1200 MW It was operating at a base load plant for 150 days in a year…

Q: 2. Suppose 2000 turns of copper wire are wrapped around one portion of an iron hoop, and 3000 turns…

A:

Q: Q20/ what are the purposes of protection equipment in dc machines

A: Protection equipment are uses to protect the dc machine for various purposes. 1. Over voltage…

Q: In the distribution transformer; In the transformer used for the distribution of electricity to the…

A: Distribution transformer step down the voltage incoming to distribution transformer =3.3 kV The…

Q: 1. Thyristor switched reactor(TSR) for power factor improvement (i need explained if possible)

A: 1. Thyristor switched reactor(TSR) for power factor improvement

HVDC

HVDC stands for high voltage direct current in the electric power transmission system. The high voltage direct current system uses direct current (DC) for the transmission of electrical power through transmission lines in contrast with the alternating current that is the AC system. The HVDC is used to transmit bulk power point-to-point through long distances transmission lines. Power is rapidly transferred because the efficiency of transmission lines is greatly increased over long distances due to HVDC lines.