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 a determine the transfer function vosv1 s for the circuit

1. (a) Determine the transfer function Vo(s)/V1 (s) for the circuit shown below. (b) From the transfer function identify what type of filter it is. (c) Justify your answer of part b 2. (a) Draw the circuit of a free runn ...

1 what is the determinant expansion for the curl of a

1. What is the determinant expansion for the curl of a vector? 2. What is the significance of the curl of a vector being equal to zero? 3. State Ampere's circuital law in differential form for the simple case of How is i ...

When bill clinton took office in january 1993 he faced two

When Bill Clinton took office in January 1993, he faced two major economic problems: a large federal budget deficit and high unemployment resulting from a very slow recovery from the recession of 1990 to 1991. In his fir ...

An infinite plane sheet lying in the plane carries a

An infinite plane sheet lying in the plane carries a current of uniform density Find the magnetic field intensities adjacent to the sheet and on either side of it. What is the polarization of the field?

Lab 5 multisim1objectivestudents will be introduced to

LAB 5: Multisim 1. Objective Students will be introduced to National Instrument Multisim software for circuit design and analysis. You will conduct a DC operating point analysis simulation and you will use this to verify ...

1 what is the particular advantageous characteristic

1. What is the particular advantageous characteristic associated with the unit vectors in the Cartesian coordinate system? 2. How do you find a vector perpendicular to a plane? 3. How do you find the perpendicular distan ...

Power mosfet breakdown voltage 800v must conduct 10a when

power mosfet breakdown voltage 800v must conduct 10A when on with a maximum on state voltage 4v.If the current density in the mosfet must be limited to 200A/cm,estimate the conduxting area

Suppose a geologist has collected 15 specimens of a certain

Suppose a geologist has collected 15 specimens of a certain rock, call it R1, and 10 specimens of another rock, call it R2. A laboratory assistant selects randomly 15 specimens for analysis, and let X be the r.v. denotin ...

A vertical cylindrical tank closed at the bottom is

A vertical, cylindrical tank closed at the bottom is partially filled with an incompressible liquid. A cylindrical rod of diameter d i (less than tank diameter, d 0 ) is lowered into the liquid at a velocity V. Determine ...

Assume bob using the rsa cryptosystem selects p 11 q 13

Assume Bob, using the RSA cryptosystem, selects p = 11, q = 13, and d = 7, which of the following can be the value of public key e? a. 11 b. 103 c. 19

  • 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