Example numerical of dc generator., Electrical Engineering

Assignment Help:

Q. An 8 - pole dc generator has 500 armature conductors and has a useful flux per pole of 0.065 web. What will be the emf generated if it is lap connected and runs at 1000 r.p.m.  What must be the speed at which it is to be driven to produce the same emf if it is wave wound?  

Ans.

E1   = N1PΦZ/60A = 10000 × 0.065 ×500 ×  P/A

               For lap connection A = P

 

                       E1  =  10000 × 0.065 ×500 /60 = 541.67 volts

 

                       E2  = N28ΦZ/60 × 2

 

 Since                  E2  = E1

 

                             8N2ΦZ/60 × 2 = 8N1ΦZ/60 × 8

 

                       N2 = N1 × 2/8 = 1000 × 2/8 = 250 rpm


Related Discussions:- Example numerical of dc generator.

Ultrasonic Sensor Help for Seventh Grader, What are ultrasonic sensors made...

What are ultrasonic sensors made of? What is a good online source to find information on a basic level about ultrasonic sensors?

Reduce the circuit to a thevenin and a norton equivalent, Q. Reduce the cir...

Q. Reduce the circuit of Figure to a Thévenin and a Norton equivalent circuit with respect to terminals a-b.

What do mean by flow of electron, Flow of electrons - Electrons flow down a...

Flow of electrons - Electrons flow down a wire that is what current, is. Good conductors like copper and silver and aluminum have free electrons in their outer shells, and they jum

Types of bias circuit for class a amplifiers, Types of bias circuit for Cla...

Types of bias circuit for Class A amplifiers: There are five common types of biasing circuits used with Class A bipolar transistor amplifiers: A. Fixed bias B. Collector

Bipolar junction transistor, Bipolar junction transistor: Transistors ...

Bipolar junction transistor: Transistors are so named as they conduct via using both majority and minority carriers. The bipolar junction transistor that is abbreviated as BJT

Draw the circuit of battery having of three cells in series, One battery ha...

One battery having of three cells in series. External resistance is 5 Ω E.m.f each cell is 1.5V and internal resistance is 0.2?. Measure the current flow and draw the circuit.

Semiconductors, Charge density In a semiconductor

Charge density In a semiconductor

Determine current and voltage in given circuit, Determine i L (t) and v C (...

Determine i L (t) and v C (t) for t> 0 in the circuit given in Figure.

Explain the architecture of 8085, Explain the Architecture of 8085. Ø  ...

Explain the Architecture of 8085. Ø  ALU Ø  Interrupt control Ø  Serial I/O control Ø  Timing and control unit Ø  Instruction Register & Decoding

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd