2. The OCC of a shunt generator running at 850 rpm is given below:Field current (A):0.81.62.43.244.85.6Armature voltage (V):28557582100108115(i) Find the open circuit induced emfs for field resistances of 22N and 332. (ii) What shouldbe the field resistance so that the open circuit induced emf at 850 rpm is 100 V. (iii) Find thecritical speed for the field resistance found in (ii) and (iv) find the critical field resistance at850 rpm.64/114

Answered: Image /qna-images/answer/b5cfd30f-7d68-45c0-a57d-509a31cf3587.jpg

2. The OCC of a shunt generator running at 850 rpm is given below: Field current (A): 0.8 1.6 2.4 3.2 4 4.8 5.6 Armature voltage (V): 28 55 75 82 100 108 115 (i) Find the open circuit induced emfs for field resistances of 220 and 332. (ii) What should be the field resistance so that the open circuit induced emf at 850 rpm is 100 V. (iii) Find the critical speed for the field resistance found in (ii) and (iv) find the critical field resistance at 850 грт. 64/114

2. The OCC of a shunt generator running at 850 rpm is given below: Field current (A): 0.8 1.6 2.4 3.2 4 4.8 5.6 Armature voltage (V): 28 55 75 82 100 108 115 (i) Find the open circuit induced emfs for field resistances of 220 and 332. (ii) What should be the field resistance so that the open circuit induced emf at 850 rpm is 100 V. (iii) Find the critical speed for the field resistance found in (ii) and (iv) find the critical field resistance at 850 грт. 64/114

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

Similar questions

1
Which of the following statements related to wind turbine types are true? Select one or more: a. The Savonius rotor will not start without an auxiliary motor b. In modern industrial-sized wind turbines, the most common type of turbine is a 3-bladed wind turbine. c. In a downwind turbine, the blades are on the (upper) side of the wind when viewed from the nacell
DC generators
A 12-kW, 250-V dc. shunt generator has armature and field resistances of 0.68 ohm and 120 ohm. respectively. Determine the total armature power developed in generator.
A 250 V DC shunt generator has a constant loss of 1250 W. Find the load current for maximum efficiency. Also find the value of maximum efficiency and output power times maximum efficiency. The armature resistance is 0.10.
DC motr
A six-pole, 30-slot dc commutator generator has a lap wound Armature winding. The armature constant, Ka is 9.55.The generator is operated with a separately excited field such that the field flux per pole is 0.04 weber/pole. The generator is driven at a speed of 3000 rpm. The no load armature voltage is 418.9 V. The above generator is now operated as a motor. The flux is 0.04 weber/pole. It is desired to supply a load requiring a Torque of 50 n–m at 4000 rpm. Armature circuit resistance is 0.075 ohm. Calculate (a) the back emf, (b) the required armature current and voltage to supply this load.
Please solve this problem step by step and illustrate your answer properly. Write your answer in a piece of paper please. Box the final answer.
short shunt compound generator delivers a load current of 10A at 200V and has a shunt field resistance 200 ohms. The shunt field current of 2A. Then armature delivers a current of a.10A b.8A c.11A d.12A
A 1000rpm DC shunt generator is supplying 100 lamps of 60W at 230V, the armature and field resistance are respectively 0.10 and 1150.Calculate the Load current. O a. 26.09 A O b. 16.09 A OC. 36.09 A O d. 46.09 A
4. A shunt generator has a full load current of 196 A at 220 V. The stray losses are 900W and the shunt field coil resistance is 75N. If it has a full load efficiency of 90%, find the armature resistance.
Explain in detail the Starting of Induction Motors