Provide brief answer only. What is a variable DC source? Give symbol and applications.
Q: Discuss the effect of adding a poles on time response, through the speed response , overshoot…
A: consider the given question;
Q: Explain with neat sketch, how electrical energy is produced from the wind energy in WECS?
A: Wind energy conversion systems (WECS) are specially created system which are designed to convert the…
Q: Aside from the Electromagnetic Induction, what other principle is use for the generation of emf in…
A: Alternator:- A machine that transforms mechanical energy into AC electrical energy is called an…
Q: What is Commutation in DC Machines? What are the methods you will suggest to improve the commutation…
A: COMMUTATION IN DC MACHINE: The commutation in DC machine is the process in which the alternating…
Q: Illustrate the physical components of a DC motor.
A:
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: Why sub transient current magnitude is large compare to steady state current?
A: i) The flux produced by field winding and flux produced by armature winding are assumed to be…
Q: With increasing load current, the output voltage of a separately-excited DC generator falls, which…
A: The separately-excited DC generator the field winding can be excited by an external source. This…
Q: Explain the AC Operation Of Electrodynamics'" Instruments in detail.
A: Electrodynamic type instrument: Two fixed coils, a moving coil, a control spring, a…
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: What are the various losses in an induction motor? On what actors do they depend?
A: Following are the various losses in an induction motor a) Core loss b) Stator conductor loss c)…
Q: b) There are several ways for testing DC machines, mention detail with illustrations.
A:
Q: What is Commutation in DC Machines? What are the methods you will suggest to improve the commutation…
A: Commutation in DC machine and it's way to improve
Q: What is advantage of commutator in DC machines? * Your answer
A: Let us try to understand the advantage of the commutator in a dc machine.
Q: Explain any 3 industrial applications of dc motors
A: Applications of Dc motors in industry: Dc motors are 1) Dc series motor: high starting torque…
Q: What can you say about the AC vs. DC or the war of currents?
A: Electric currents are of two types, AC and DC. AC stands for Alternating current while DC stands for…
Q: Describe the Characteristics, characteristics, efficiency calculations, their applications Of DC…
A:
Q: Define the term of degree of compounding in DC generators. What are the applications of different…
A: Degree of compounding in DC generator is determined by number of turns in series field winding.…
Q: Discuss the importance of power plant engineering and design in the actual field?
A:
Q: (1) THE CONSTRUCTION OF DC MACHINE Aim: A simplified sketch of a dc machine and describe the…
A: DC Machine is further divided as DC Motor (which converts Electrical Energy to Mechanical energy )…
Q: Explain the stability analysis of a DC system in detail.
A: A dc system is supposed to be locally steady about a working point if the frameworks voltages and…
Q: Explain AC exciter with an example.
A: It is asked to explain AC exciter with an example. The system which is used to provide the necessary…
Q: Explain the Construction and Applications of DC Machines.
A: Construction of a DC machine: The DC machine consists of two main parts: Stator and Rotor 1. Yoke:…
Q: b) What are the equivalent ac circuit models of an ideal DC voltage and current source?
A: We need to tell about the ac equivalent circuit for DC sources
Q: 1. Why sub transient current magnitude is large compare to steady state current?
A: In power system transient and sub transient current it is occur only when three phase fault occur in…
Q: What are the computations needed when designing a Diesel Electric Power Plant
A: Diesel electric power plant is a power plant in which a diesel engine is used as a prime mover for…
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: find dc and ac analysis
A: The circuit is as shown below,
Q: Give some applications for the AC-AC voltage controller. Can this controller be a substitute for…
A: The AC supply is available at the power supply. There are different loads present which require…
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: What is a simulator? What are advantages of simulation in electrical power system?
A: The solution can be achieved as follows.
Q: What is the DC equivalent circuit?
A: I have solved the DC equivalent of the circuit along with its load line and DC operating point.
Q: What are the methods of excitation of the field windings of the DC machines? Draw the corresponding…
A: In the DC machine, there are two types of Excitation- 1). Separately Excitation of DC machine 2).…
Q: Derive the EMF and Torque equations of DC machines from the first principles.
A: The E.M.F equation of the DC machine is to be derived using the operating principle. Let us consider…
Q: What is the difference between sensible heat gain and latent heat gain?
A: Given that What is the difference between sensible heat gain and latent heat gain?
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: write introduction to AC and DC currents, where they are used, their advantages/disadvantages, etc.…
A: In this question we are interested in in roaming the AC and DC current differences With the…
Q: Which one is better for transmission AC or DC distribution? And why?
A: Generally the generating stations are far away from the load or utility centers. Hence transmission…
Q: Explain flexibility in FACTS and write the ways to achieve it. “Despite many advantages of DC…
A:
Q: The armature reaction of DC machines is more during load condition. Select one: True False
A: Armature reaction is the effect of armature flux on field flux.
Q: Draw the DC Machine and label its parts
A:
Q: Describe briefly the basic constructional parts of a DC machine and explains the basic working…
A: Since you have asked multiple questions, we will solve the first one for you. In case you need…
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: 15. For a dc machine, its commutator has a diameter of 50 c rotating at 1000 rpm. For a brush width…
A:
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: Complete the blank Commutator in DC machine is made up of .....................................?
A: The commutator is the device used with the rotor in electrical machines to ensure that current at…
Provide brief answer only.
What is a variable DC source? Give symbol and applications.
Step by step
Solved in 2 steps with 1 images
- help me in these questions pls write the questions with the and by (Computer) 1-Which of the following statements INCORRECTLY explain the label in the figure about LVDT working principles? a. Secondary coils are connected in series in such a way that their output is opposing each other. b. Constant DC voltage input to primary coil. c. Displacement moves ferrous rod from central position. d. The difference of the output voltage between the two secondary voltage.==========2- Explain the working principle of the measurement system in the figure below.i. Force input that is supplied to the sensor is processed to give the response in the form of raw output signal.ii. Signal conditioner manipulated the weak signal to give a conditioned input.iii. Analog or digital indicator display the unit that gives output reading of quantity being measured.iv. Measured value is compared with the input value for further action. a. ii, iii and iv only. b. i, ii and iv only. c. i, ii and…b) What are the equivalent ac circuit models of an ideal DC voltage and current source?4. Explain the relationship between back emf E, terminal voltage V and coil voltage drop IR in DC motor and generator respectively. i. Describe how the field strength affect the performance of DC motor and generator. ii. Explain how an external resister changes the DC motor and generator performance.
- Explain the concept of power quality in electrical systems and the potential issues that can arise, such as voltage sags, harmonics, and flicker.Explain flexibility in FACTS and write the ways to achieve it. “Despite many advantagesof DC transmission, it is seldom used” – why? Write a short note on SMPS.[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 voltage