Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Electrical & Electronics Expert

1) prepare the emf equation for d.c. generator.

2) Describe why armature core in d.c machines is constructed with laminated steel sheets instead of solid steel sheets?

3) describe why commutator is employed in d.c.machines?

4) prepare down the difference between shunt and series field coil construction.

5) Describe how does d.c. motor differ from d.c. generator in construction?

6) How will you modify the direction of rotation of d.c.motor?

7) What do you mean by back emf in d.c. motor?

8) describe the function of no-voltage release coil in d.c. motor starter.

9) prepare down the factors on which speed of d.c.motor depends.

10) Under what situation, does a dc shunt generator fail to generate?

11) A 50 Hz, 400v, 4-pole cylindrical synchronous generator has 36 slots, two –layer winding with full pitch coils of 8 turns each. Mean air –gap diameter is 0.16m, axial length 0.12m and uniform air gap of 2mm. Compute the value of resultant AT/pole and peak air gap flux density. The machine is developing electromagnetic torque of 60 Nm as a generator at a torque angle of 260. What must be the rotor AT/pole? What is the stator AT and the angle it makes with the resultant AT? Also determine the stator current.

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M911381

Have any Question? 


Related Questions in Electrical & Electronics

1 find the minimum value of h for which the gate shown

1. Find the minimum value of h for which the gate shown will rotate counterclockwise if the gate cross section is (a) rectangular, 4 ft × 4 ft; (b) triangular, 4 ft at the base × 4 ft high. Neglect bearing friction. 2. A ...

Figure 3012 shows a router using fifo queuing at the input

Figure 30.12 shows a router using FIFO queuing at the input port. The arrival and required service times for seven packets are shown below; ti means that the packet has arrived or departed i ms after a reference time. Th ...

1 does sip need to use the service of rtp explain2 we

1. Does SIP need to use the service of RTP? Explain. 2. We mentioned that SIP is an application-layer program used to provide a signaling mechanism between the caller and the callee. Which party in this communication is ...

1 what is the propagation vector interpret the significance

1. What is the propagation vector? Interpret the significance of its magnitude and direction. 2. Discuss how the phase constants along the coordinate axes are less than the phase constant along the direction of propagati ...

Solve problem using the secant method do not use the

Solve Problem using the secant method. Do not use the incremental force method. Discuss about the convergence rate. Problem :- Consider a uniform bar with a constant Young's modulus, E = 100 MPa; cross-sectional area, A ...

1 state the relationship between polarization current

1. State the relationship between polarization current density and electric field intensity. How is it taken into account in Maxwell's equations? 2. What is the revised definition of D? 3. State the relationship between ...

1 state gauss law for the electric field2 how is volume

1. State Gauss' law for the electric field. 2. How is volume charge density defined? 3. State the law of conservation of charge. 4. How is Gauss' law for the electric field derived from Ampere's circuital law?

1 what are the different kinds of magnetic materials2 what

1. What are the different kinds of magnetic materials? 2. What is the magnetization vector? How is it related to the magnetic flux density? 3. Discuss how magnetization current arises in a magnetic material. 4. State the ...

1 a synchronous alternator is supplying 09 pu power to the

(1) A synchronous alternator is supplying 0.9 p.u. power to the grid when a temporary three-phase short occurs on the interconnector. The power angle curves are:- Pre-fault = 2.0 sin(delta) During fault = 0.5 sin(delta) ...

1 in a dht-based network assume node 4 has a file with key

1. In a DHT-based network, assume node 4 has a file with key 18. The closest next node to key 18 is node 20. Where is the file stored? a. in the direct method b. in the indirect method

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro