A separately excited do generator operates at a voltage Vand armature current la. The armature resistance is R, andthe generator has a constant loss of P(W). For themaximum efficiency of the generator(A) la =VR,(B) la =V 4R,2Pc(C) la =Pc(D) la =2R,a

A separately excited DC generator operates at V voltage and armature current Ia having Armature…

A separately excited dc generator operates at a voltage V and armature current la. The armature resistance is Ra and the generator has a constant loss of P(W). For the maximum efficiency of the generator (A) la = VR. (B) la = 4R a P. (D) la = 2P (C) la = VRa 2Ra

A separately excited dc generator operates at a voltage V and armature current la. The armature resistance is Ra and the generator has a constant loss of P(W). For the maximum efficiency of the generator (A) la = VR. (B) la = 4R a P. (D) la = 2P (C) la = VRa 2Ra

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Related questions

Q: Define two parameters which are indices of performance of a DC generator and there values affect…

A: DC machines (Generator/ Motor) are the important parts of electrical drives. These machines are used…

Q: determine (i) Generated EMF (ii) Total Resistance (iii) Armature Current (iv) Terminal Voltage.

Q: An 10-pole d.c. generator has 440 armature conductors, and a useful flux of 36 mWb per pole. What…

A: as solve below

Q: A long shunt compound generator delivers 50 A load at 500 V. Find induced e.mf. and the armature…

A: In the question, A long shunt compound generator deliver 50A at 500V. Find the armature current,…

Q: A DC generator has 4 pole, wave wound amature with 736 conductors. If the induced voltage in the…

A: According to the question we have to find the value of flux per pole.

Q: 1- A 8-pole a separately excited generator, having the wave-wound armature winding has 16 slots,…

A: As per guidelines we are supposed to answer only first question if multiple questions are posted by…

Q: An 8-pole d.c. generator has 410 armature conductors, and a useful flux of 46 mWb per pole. What…

Q: An 4-pole d.c generator has 435 armature conductors, and a useful flux of 20mWb per pole. What will…

A: Given: For a DC generator, Number of Poles (P)=4 Number of conductors (Z)=435 Useful Flux (ϕ)=20…

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

Q: 3. A d.c. generator generates an e.m.f. of 520 V. It has 2,000 armature conductors, flux per pole of…

A: Emf generated in DC generator is given as, E=(N*P*ϕ*Z)/(60*A) Where N= speed in rpm P= number of…

Q: Q1) A 4 poles de separate excited generator has 56 slots, and each armature coil has 8 turns. The…

A: To find the load voltage of the generator, we need to calculate the armature resistance and the…

Q: scuss the importance, advantages and disadvantages of generator.

A: The explanation is as follows.

Q: ) A d.c. shunt generator has shunt field winding resistance of 100 n. It is supplying a load of 5 KW…

A: In this question we will find induced emf of generator...

Q: A self-excited shunt generator has a field resistance of 52 ohms. When the generator delivers 7 kW,…

A: First we will find load current and field current then we will find current in the armature .…

Q: A 2 pole wave wound dc shunt generator runs at a speed of 750 rpm, has an armature and shunt field…

A: In the question following data is given P=2 A=2 N=750 rpm Z=880 Flux= 0.115 Ra=0.9 ohm Rsh=280 ohm…

Q: 6. The O.C.C. of a shunt generator when separately-excited and running at 1000 r.p.m. is given by :…

A: 6. The Open circuit characteristics of a shunt generator when separately-excited and running at 1000…

Q: Find the maximum efficiency of shunt generator has the armature resistance and shunt resistance 0.08…

A: Given Ra=0.08 Ω Rsh=120 Ω Wr=800 W VT=250 V

Q: A 4-pole, 900 r.p.m. d.c. generator has a terminal voltage of 220 V and an induced voltage of 240 V…

A: The solution is attached below.

Q: Between a separately-excited and a self-excited DC generator, which is simpler to construct and why?

A: Between a separately-excited and a self-excited DC generator, self excited dc generator is simpler…

Q: Example 1: A 4 pole, Lap wound separately excited DC. Generator has an armature resistance of 0.40…

Q: A short shunt compound generator delivers 150 amperes of current at 230 volts. It has armature,…

Q: b) In a dc shunt generator, as the load increases the terminal voltage falls. Illustrate the reason…

Q: 1. An 8-pole d.c. shunt generator with 800 wave-connected armature conductors and running at 1500…

A: The load current of the dc shunt generator is, IL=VtRLVt=250 VRL=15 ΩIL=25015 AIL=16.67 A The…

Q: Q2\A/ A 8 pole de generator has 500 armature conductors and a useful flux of 0.05 wb. What will be…

A: Given data: DC generator Poles, P=8 Armature conductors, Z=500 Useful flux, ϕ=0.05 Wb Speed, N=1200…

Q: A seperately excited DC generator has a no load voltage of 127 V, Ra= 0.02 ohm and Rsh=15 ohm. Find…

A: Given a separately excited DC generator has, No load voltage of 127 V Armature resistance, Ra= 0.02…

Q: An 8-pole d.c. generator has 290 armature conductors, and a useful flux of 10 mWb per pole. What…

Q: Is 0.46 Weber. If the lamp load connected has a resistance of 40 Q, determine (i) Generated EMF,…

Q: A long-shunt compound generator supplies 50 kW at 230 V. the total field- and armature circuit…

A: Step-1->We have

Q: Between a separately-excited and a self-excited DC generator, which is simpler to construct and why?

A: In separately excited DC generator, we have to supply the excitation voltage from outside the…

Q: 4) What are the conditions for voltage building up of a separately excited DC generator?

A: Conditions for voltage building up :- i)There should be sufficient residual flux at the field…

Q: How would you reverse the polarity of a self-excited DC generato

A: In this question we will write how we can reverse the polarity of self excited generator....

Q: A shunt generator delivers 195 A at a terminal p.d. of 250 V. The armature resistançe and shunt…

A: Generated emf = terminal voltage +voltage drop in armature resistance. Armature current = load…

Q: An 6-pole d.c. generator has 290 armature conductors, and a useful flux of 12 mWb per pole What will…

A: In this question , we will find speeds for dc machine..

Q: 1.4 The crystal-lattice constant of GaAs is a = 0.565 nm, whereas the atomic masses of Ga and As are…

Q: A 4-pole, d.c. shunt generator with a shunt field resistance of 100 2 and an armature resistance of…

Q: A 8-pole dC generator running at 1,200 rpm, and with a flux of 25 m Wb per pole generates 440 V.…

A: Number of poles p = 8 RPM N = 1200 Flux ϕ = 25 m Wb = 0.025 mWb Voltage E = 440 V

Q: An engineer is designing 4-pole DC generator with 30 conductors by using simplex two-layer wave-…

Question

A separately excited do generator operates at a voltage V
and armature current la. The armature resistance is R, and
the generator has a constant loss of P(W). For the
maximum efficiency of the generator
(A) la =
VR,
(B) la =
V 4R,
2Pc
(C) la =
Pc
(D) la =
2R,
a

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.

Similar questions

q4 b
1A. Which of the following is/are a method of providing field excitation for a DC generator. a) separately excited shunt b) self-excited series c) self-excited shunt d) all of the above 1B. Which type of field winding typically has the higher resistance? a) series b) shunt
I need the answer as soon as possible
An 6-pole d.c. generator has 515 armature conductors, and a useful flux of 10 mWb per pole. What will be the e.m.f. generated if it is lap-connected and runs at 970 rpm? What must be the speed at which it is to be driven produce the same e.m.f. if it is wave-wound? Eg Speed
A 4 pole armature of a DC machine has 175 conductors and a flux per pole of 0.1 wb. Find the EMF generated when running at 600 rpm, when the armature is Lap wound.
the armature of a 12 pole wave wound dc shunt generator has 50 slots with 12 conductors per slot. the generatoris running at a speed of 625 rpm and supplies a resistive load of 15 ohm at a terminal voltage 350v. the armature and the field reisitance are0.5 ohm and 70 ohm respectively. find the armature current,generated emf and flux per pole
A 4-pole DC generator has 800 armature conductors and a flux per pole of 10 mWb running at 600 rpm. Calculate the EMF generated when the armature is connected as a simplex lap winding.
An 6-pole d.c generator has 300 armature conductors, and a useful flux of 14 mWb per pole. What will be the em.f. generated if it is lap-connected and runs at 1420 rpm? What must be the speed at which it is to be driven produce the same e.m.f. if it is wave-wound?
The armature of a d.c. generator consists of 40 coils and each coil has 20 turns. When the armature is rotated at 200 rad/s in a 4-pole field structure having a flux of 5 mWb/pole and there are four paths in the armature, calculate (i) number of armature conductors (ii) the voltage between brushes generated by the armature.