Electric Motor Control
10th Edition
ISBN: 9781133702818
Author: Herman
Publisher: CENGAGE L
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 4, Problem 7SQ
The symbol shown is a(n)
a. iron core transformer.
b. auto transformer.
c. current transformer.
d. air core transformer.
Expert Solution & Answer
Trending nowThis is a popular solution!
Students have asked these similar questions
what is backlash in transformer ? if dc added in transformer what will happened. please draw diagrams and explained.
What is a transformer and explain how does it works.
What are the different type of transformer and explain its function and purposes.
What are the important requirement of transformer winding.
What is a transformer bushing and why it is provided.
What are the type of cooling system for oil immersed
transformer and explain the method of cooling system.
Draw and explain the efficiency characteristics of transformer and regulation characteristics of transformer.
Chapter 4 Solutions
Electric Motor Control
Ch. 4 - Identify the following symbols.Ch. 4 - Electrical symbols usually conform to which...Ch. 4 - What do the following abbreviations stand for? a....Ch. 4 - Single-pole and double-pole switch symbols are...Ch. 4 - The symbol shown is a a. polarized capacitor. b....Ch. 4 - The symbol shown is a a. normally closed float...Ch. 4 - The symbol shown is a(n) a. iron core transformer....Ch. 4 - The symbol shown is a a. normally open pressure...Ch. 4 - The symbol shown is a a. double-acting push...Ch. 4 - If you were installing the circuit in Figure 412,...
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
- Ans all the below questions... Which liquid is used for transformer cooling?What is cooling tube in transformer?Why does a transformer need cooling?What are the different types of transformer cooling?arrow_forward5. Transformer cores are laminated in order to (a) simplify its construction (b) minimise eddy current loss (c) reduce cost (d) reduce hysteresis loss. 6. A transformer having 1000 primary turns is connected to a 250-V a.c. supply. For a secondary voltage of 400 V, the number of secondary turns should be (a) 1600 (b) 250 (c) 400 (d) 1250 7. The primary and secondary induced e.m.fs. E, and E₂ in a two-winding transformer are always (a) equal in magnitude (b) antiphase with each other (c) in-phase with each other (d) determined by load on transformer second- ary. 8. A step-up transformer increases (a) voltage (b) current (c) power (d) frequency. Farrow_forwardQ2/ Fill in the blanks: 1- The two windings of a transformer is linked. ***** 2- If a transformer primary is energized from a square wave voltage source, its output voltage will be.......... 3- The primary winding of a 220/6 V, 50 Hz transformer is energized from 110 V, 60 Hz supply. The secondary output voltage will be ...... V.arrow_forward
- transformers Transformer I want a short answer please 1. The number of devices required to perform the no-load test and the short-circuit test for transformers. 2. Explain the steps of conducting a no-load experiment for transformers. 3. Explain the steps for conducting a short circuit test for a transformer. 4. Draw a circle diagram..No load test 5. Draw a circle diagram. Short circuit test 6. What is the benefit of conducting a no-load test and a short-circuit test for transformers? 7. What does the reading of the gauges used in the no-load test and the short-circuit test of transformers represent? 8. If the frequency of the supplied source changes from 50 to 45 How will the electromotive force of the secondary be affected? 9. Are there other ways - besides the load and no-load test - to test transformers and extract their constants more accurately? What is it? Sumpners test 10.. Number of types of transformers in the laboratory and compare them in terms of working principle and work…arrow_forward:The transformer Iron losses is .Constant independent of the applied voltage O .A linear function of the supplied voltageO .A second order function of the supplied voltageOarrow_forward1. How is the performance of a transformer measured? Why low voltage regulation and high efficiency is better? What is the meaning of positive and negative voltage regulations?arrow_forward
- Select the correct statement for step down transformer. a. Primary number turns = Secondary number turns b. Primary number turns Secondary number turns d. Secondary number turns = 0arrow_forwardb- What is the main differences in the design of Pulse transformer and Isolating transformer. c- Explain the main factors have to be considered in the design of distribution transformer. d- Which type of core materials is more suitable to avoid the Inrush current in power transformers. Explain the reason. e- Why it is very dangerous to let the current transformer used as a measuring device in a high voltage power system to be open circuited?arrow_forwardB/ Fill in the blanks: 1. The purpose of providing the iron core in the transformer is to 2. A transformer transforms... 3. Power transformers are designed to have maximum efficiency at 4. The transformer ratings are usually expressed in terms of menmarrow_forward
- Define Mutual Induction and how describe how a transformer operates.arrow_forward3.b. When several blowers are installed instead of a single blower to force air through a transformer, theyA. require more complicated installation.B. provide greater safety.C. are noisier.D. consume more power. 3.c.In large power transformers, the unequal voltage distribution caused by voltage surges in the winding isprevented by the use ofA. series capacitors.B. parallel inductances.C. static shields.D. low-voltage arresters.arrow_forwardThe efficiency of a transformer will be maximum when ........................? (A) copper losses = hysteresis losses (B) hysteresis losses = eddy current losses (C) eddy current losses = copper losses (D) copper losses = hysteresis losses plus eddy current losses (E) None of the above.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Electricity for Refrigeration, Heating, and Air C...Mechanical EngineeringISBN:9781337399128Author:Russell E. SmithPublisher:Cengage Learning
Electricity for Refrigeration, Heating, and Air C...
Mechanical Engineering
ISBN:9781337399128
Author:Russell E. Smith
Publisher:Cengage Learning
TRANSFORMERS - What They Are, How They Work, How Electricians Size Them; Author: Electrician U;https://www.youtube.com/watch?v=tXPy4OE7ApE;License: Standard Youtube License