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

Solve problem using force equilibrium ie internal force

Solve Problem using force equilibrium; i.e., internal force caused by stress is equal to external force. Problem A force F is applied at the tip of the uniform bar element shown in the figure. The initial length and the ...

1 discuss the consequence of the frequency dependence of

1. Discuss the consequence of the frequency dependence of the phase velocity of a wave in a material medium. 2. What is loss tangent? Discuss its significance. 3. What is the intrinsic impedance of a material medium? Wha ...

For a system specified by the transfer functionwrite sets

For a system specified by the transfer function write sets of state equations for DFII and its transpose, cascade, and parallel forms. Also write the corresponding output equations.

The exponential fourier spectra of a certain periodic

The exponential Fourier spectra of a certain periodic signal x(t) are shown in Fig. 6.13. Determine and sketch the trigonometric Fourier spectra of x(t) by inspection of Fig. 6.13. Now write the (compact) trigonometric F ...

1 in pastry assume the address space is 16 and that b 2

1. In Pastry, assume the address space is 16 and that b = 2. How many digits are in an address space? List some of the identifiers. 2. In a Pastry network with m = 32 and b = 4, what is the size of the routing table and ...

1 for a point charge q situated at the point 1 2 0 find the

1. For a point charge Q situated at the point (1, 2, 0), find the potential difference between the point A(3, 4, 1) and the point B(5, 5, 0). 2. For the arrangement of a linear electric dipole consisting of point charges ...

1 compute the radiation resistance per kilometer length of

1. Compute the radiation resistance per kilometer length of a straight power-line wire. Comment on the effectiveness of the power line as a radiator. 2. Find the time-average power required to be radiated by a Hertzian d ...

1 what is the significance of a nonzero net right-lateral

1. What is the significance of a nonzero net right-lateral differential of and normal to the z-direction at a point in space? 2. If a pair of E and B at a point satisfies Faraday's law in differential form, does it neces ...

1 discuss briefly the application of gauss law for the

1. Discuss briefly the application of Gauss' law for the electric field to determine the electric field due to charge distributions. 2. State Gauss' law for the magnetic field. How is it derived from Faraday's law? 3. Wh ...

1 is it meaningful to consider two different surfaces

1. Is it meaningful to consider two different surfaces bounded by a closed path to computethe two different currents on the right side of Ampere's circuital law to find around the closed path? 2. Discuss briefly the appl ...

  • 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

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

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen