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

Q: Q1: a) why is the resistance of small machines high, and the resistance of large machines low? why…

A: Why the resistance of small machines high and the resistance of large machines low ? The reason…

Q: Which type of wind turbine has a higher cut-in speed and lower efficiency? O a. VAWT- drag type O b.…

A: Which type is wind has higher cut in speed and lower efficiency

Q: 1. The armature of D.C. generator is laminated to (a) Reduce the bulk (b) Provide the bulk (c)…

A:

Q: What is power factor? what are the causes of low power factor and how do you improve the power…

A: Active Power (P): The power which is deployed and absorbed by the electric circuit to do some…

Q: 6.9 justify the following statement: if the interpole winding is left unexcited, commutation will be…

A: Ans. True

Q: For a two finite machines, inertia constant combines like the impedance connected in series. Select…

A: For two finite machines, inertia constant (H)

Q: What will be the front and back pitches of the 6-pole dc generator with a simplex 2-layer wave…

A:

Q: Design a winding diagram given the following specifications. • Simplex Wave Progressive Winding •…

A: We need to design a simplex wave progressive winding for the following configuration: number of…

Q: Q Advantages of rotating field in an Alternator? (Write five point with Explanation)

A: An alternator is a machine that transforms mechanical energy into alternating current (AC)…

Q: Triaxial has a single core and two shields like a twin-axial coaxial cable. Select one: True False

A: In this question we need to verify the given statement is correct or incorrect.

Q: 8 If we model each winding of a three-phase motor like the circuit shown in Figure P7.68(a) and…

A: Calculate the reactance of the inductor, Calculate the impedance of one branch,

Q: In the field circuit model of a DC machine, a variable _____ is usually inserted in series with the…

A: The solution is given below

Q: What is wr crad/sec), Pout CW) 2od Efficiency C % when Vtine CV)= 43.75V. CA)= 2638A, Pin ÇW)- 13W,…

A: Vline=43.75 VIph=2.38 APin=113 WTorque=0.5 NmSpeed=1406 rpmLoad Slip=0.05 Where, Pin = total three…

Q: Starting from e = Blv, derive an expression for the induced voltage in a DC generator.

A:

Q: Harmonics generated in a machine related to the distribution of windings is Answer:

A: Harmonics generated in a machine related to the distribution of winding is

Q: True

A:

Q: The series field winding of DC Machine has many turns of thick wire Select one: True False

A: The shunt field winding has high resistance(R is high) and series field winding has low resistance(R…

Q: Q3:B: Name general types of DC generators and make a sketch of their connections

A:

Q: construct an winding diagram with -4 poles -26 conductors -double layer -simplex wave winding, 2…

A:

Q: The AC Voltage controller shown below is used for heating a resistive load of 5  Ω and the input…

A: Given,Vs=120 Vf=60 Hzn=125 cyclesm=75 cyclesR=5ΩVm=2×120=169.70…

Q: Question: A universal motor is controlled by using AC chopper. Suggest a method to reduce the…

A: universal motor- the universal motor is a special electric motor designed to work on either AC or DC…

Q: In a DC machine, the reversal of current from one direction to opposite direction is done by O…

A: In DC machine there is a mechanical converter which is used to change the direction of current.

Q: Discuss two advantages and disadvantages of a coubly-fed induction generato DFIG) over a squirrel…

A: Types of generator used in Wind power plant Doubly fed induction generator ( seperete excitation is…

Q: What are the different losses which occur in a DC machine. * Your answer

A: In this answer let's discuss about the different losses that can occur in a dc machine.

Q: Identify the main components of a wind turbine and explain three of them and their functions

A: Wind turbine- Wind turbine is define as the setup of large or very large blades fixed at a very high…

Q: __ is used to convert AC to unidirectional current in DC machine.(estimated time 1 minute) a.…

A: A commutator in a DC Machine has substitute groups of Copper and mica. Presently when the armature…

Q: a. Does the slip increase as the load increases? What is the reason of this? b. What does it mean…

A: (a)  Slip :- It is the difference between the synchronous speed of the motor and the shaft rotating…

Q: What causes sparking at the brushes

A: In this question, we need to discuss about the cause of the sparking at the brushes.

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

A:

Q: Q9 / What are the function of brushes , pole and commutator in DC machine

A:

Q: self excited DC generator field wit nergized by its own DC supply elect one: OTrue OFalse

A: DC generators can be classified into self excited and separately excited.

Q: Suppose we have an ac current flowing through a coil wound on an iron core. Name two mechanisms by…

A: The two mechanisms in which energy is converted to heat in the core material are: 1) Core loss or…

Q: Armature windings in ac generators are same as those used in DC machines Select one: O True O False

A: Armature is a conductor which carries the current.

Q: A self excited DC generator has no residual flux, comment how it can be excited

A:

Q: In DC Shunt generator, the armature winding and field winding are connected in series Select one: O…

A: 1) In DC shunt generator the armature winding and field winding are connected in parallel while in…

Q: A dc shunt generator has a shunt field winding resistance of 100 ohms. It supplies a load of 5 kW at…

A: Given :  In the given circuit the they have mentioned a DC shunt generator circuit.   They want to…

Q: The field system is the rotating part of the DC Generator Select one: True False

A: In DC machine rectification of power (i.e. from AC to DC or viceversa ) is done by the commutator.…

Q: hine. OMod pup anh b) In rotating machines, how would the voltages be generated in windings or…

A: Since you have posted the multiple questions so we are supposed to answer the 1st one.

Q: In a DC machine, provides the magnetic path as well as the mechanical support to the whole machines.…

A: In this we will write about dc machine part..

Q: Q3. Draw the curve showing the effects of increasing load on different types of dc generators

A: Form Load characteristics of DC generators. let, V → Terminal voltageEg → Generated EMFφsh → Shunt…

Q: Triaxial has a single core and two shields like a twin-axial coaxial cable. Select one: O True False

A: Triaxial cable, often referred to as triax for short, is a type of electrical cable similar to…

Q: Q2 : What the important characteristics of a d.c. generator explain briefly.

A: The important characteristics of DC generator are as follows: 1) Open circuit characteristics : This…

Q: State two reasons why a self-excited shunt dc generator may fail to build up a voltages In each…

A: A self excited shunt dc generator may fail to build up voltage due to following reasons: 1) Due to…

Q: 4. What for brushes are employed in DC generator?

A: DC Generator: The device that converts mechanical energy into electrical energy is called DC…

Q: What is neutral setting in DC machines related to its brush position. What if the brushes are…

A:

Q: The field winding of a.d.c. machine takes a steady current of 10A when connected to a d.c. source of…

A:

Q: 13.a. Eddy-current loss in the stator core can be reduced by using A. alloys with low resistivity.…

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

Magnetic Moment

The magnetic moment is defined as the alignment of a magnet and its strength when the magnet is creating a magnetic field. There are number of examples of the magnetic moment, few are a current carrying conductor in the form of coil, elements at microscopic levels like electrons and many more.