7- One of the reasons leads to prefer the core type transformer more than the shell type is:a) Its low leakage reactance.b) It is more robust mechanically.c) It is easy to be repaired.8- In core design of power transformer the number of steps increased as the cross-sectional areaincreased to Increase:a) The leakage inductance.b) The cooling oil paths.c) The flux density.9- The percentage impedance drop is an effective character of the transformer because:a) It increases the efficiency.b) It reduces leakage reactance.c) It improves the regulation.

As per the guidelines, the first question will be answered. The leakage reactance provided by the…

Answered: 7- One of the reasons leads to prefer…

7- One of the reasons leads to prefer the core type transformer more than the shell type is: a) Its low leakage reactance. b) It is more robust mechanically. c) It is easy to be repaired.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.9P

See similar textbooks

Related questions

Q: Derive the equation of induced voltage in secondary winding of transformer (load side).

Q: What is the material commonly used for construction of transformer core? Draw the B- H curve for…

Q: P2-Draw the equivalent circuit of a single-phase transformer and explain how the core losses are…

A: Losses in transformer

Q: How does change in frequency affect the operation of a given transformer? with a decrease in…

A: Transformer:

Q: The transformer has 600 primary turns and 2500 secondary turns and its primary voltage of 240V, then…

Q: Discuss the relationship between the operating frequency and the transformer size? Through your…

A: Considering the EMF equation of the transformer, E=4.44×f×Bm×N×A Here, E is emf, f is frequency, Bm…

Q: What is the basic functions of transformer? What is short circuit test ?

A: A transformer is made up of two electrically separate coils and works on the Faraday principle of…

Q: 8- In core design of power transformer the number of steps increased as the cross-sectional area…

A: In core designing of the power tramsformer, the number of steps are more as the cross section area…

Q: 1. A transformer transforms. (a) frequency (b) voltage (c) current (d) voltage and current. 2. Which…

Q: With base MVA of 150 and base voltage of 33. If the reactance of the transformer is 0.23 pu. The…

A: Base MVA S= 150MVA Base voltage VB = 33kV Reactance per unit = 0.23 Reactance?

Q: 11:1 2> PRI SEC 120 VAC O V1 V2 Rload (N1) (N2) 600 Ideal Transformer Figure 1: Ideal Transformer…

A: In the case of Ideal transformer with Primary turn N1 and Secondary turn N2 V1V2=I2I1=N1N2 Ideal…

Q: 2. What measures are taken for cooling of the transformer? How can you overcome the effect of…

A: No transformer is genuinely an 'ideal transformer' and thus each will cause a few misfortunes, the…

Q: List and describe the types of losses that occur in a transformer

A: Transformer is a static device . Hence there will not be friction or windage losses . The only…

Q: talk about coreless transformer

A: The brief explanation is as follows.

Q: A transformer has primary and secondary turns of 1250 and 125 respectively. It has core…

A: Given N1 =1250 N2=125 A=36 cm2 Bmax =1.4 T f=50 HZ μr=8000 core length =l=150 cm

Q: 391. A transformer has maximum efficiency at load copper loss (P.), is of full load. The ratio of…

A: Given, Transformer maximum efficiency at load factor, x=34.

Q: What are the advantages of Delta connection in high power transformer?

A: Transformer : It is an electrical device used to transform the voltage from one level to another.…

Q: 7. The primary of a single-phase transformer takes 1 A at power factor of 0.4 when connected to a…

A: In the question, Primary current Ip = 1A at 0.4PF logging with secondary side open. Secondary side…

Q: Draw the scheme of a single-phase transformer with two secondary windings and mark the main symbols…

A: Transformer: A transformer is a electrical equipment whose main purpose is to transfer electrical…

Q: A transformer core is laminated in order to .

Q: What conclusions we come up with after doing open circuit test on single phase transformer

A: For open circuit test of transformer excite any one winding of transformer at rated voltage and…

Q: The efficiency of a transformer will be maximum when ........................? (A) copper losses =…

Q: I1 12 11:1 PRI SEC 120 VAC V1 V2 Rload (N1) (N2) 600 Ideal Transformer Figure 1: Ideal Transformer…

Q: During the load test of single-phase transformer, when the secondary terminal voltage increases, the…

Q: in the blanks: The purpose of providing the iron core in the transformer is to A transformer…

Q: Justify if in a Yy transformer (without neutral wire on the supply side) there are homopolar…

A: Answer: Here it is mentioned that in a three Yy transformer there are homopolar components of…

Q: Define all the losses in the transformer with the diagram and then define the hysterisis loss with…

A: When the transformer is woking on the no-load condition, there are two components of the losses.…

Q: Figure 5 shows the core of a Linear Variable Differential Transformer (LVDT). S, S2 CORE Figure 5…

Q: In a practical transformer, Identify, which component of no load current supplies eddy current loss?…

A: no load current consist of core loss component (Ic) and magnetizing component(IM).

Concept explainers

Single Phase Transformer

A single-phase transformer is a type of power transformer. It is an electrical device that accepts converts the single phase alternating power into single phase alternating power. In this power conversion the voltage is stepped up or down. If the voltage is stepped up, the current will be stepped down and if the voltage is stepped down, the current will be stepped up.

Question

7- One of the reasons leads to prefer the core type transformer more than the shell type is:
a) Its low leakage reactance.
b) It is more robust mechanically.
c) It is easy to be repaired.
8- In core design of power transformer the number of steps increased as the cross-sectional area
increased to Increase:
a) The leakage inductance.
b) The cooling oil paths.
c) The flux density.
9- The percentage impedance drop is an effective character of the transformer because:
a) It increases the efficiency.
b) It reduces leakage reactance.
c) It improves the regulation.

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 by step

Solved in 2 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

For a short-circuit test on a 2-winding transformer, with one winding shorted, can you apply the rated voltage on the other winding? (a) Yes (b) No
Consider an ideal transformer with N1=3000andN2=1000 turns. Let winding 1 be connected to a source whose voltage is e1(t)=100(1| t |)volts for 1t1ande1(t)=0 for | t |1 second. A2- farad capacitor is connected across winding 2. Sketch e1(t),e2(t),i1(t),andi2(t) versus time t.
An ideal transformer has no real or reactive power loss. (a) True (b) False
In developing per-unit circuits of systems such as the one shown in Figure 3.10. when moving across a transformer, the voltage base is changed in proportion to the transformer voltage ratings. (a) True (b) False
8- In core design of power transformer the number of steps increased as the eross-sectional area increased to Increase: a) The leakage inductance. b) The cooling oil paths. c) The flux density. 9- The percentage impedance drop is an effective character of the transformer because: a) It increases the efficiency. b) It reduces leakage reactance. c) It improves the regulation.
If we increase the load than core loss and copper loss will... Decrease Increase Remain same
2. What is the material commonly used for construction of transformer core? Draw the B - H curve for this material?
A small single-phase 60 Hz transformer has 10.2 W at no load. The core has a volume of 750 cm3. The maximum flux density is 10,000 G and the hysteresis constant of the core is 0.0005. Using the Steinmetz law on hysteresis loss, find the eddy current loss.
A transformer core is laminated in order to ....................................? (A) reduce hysteresis loss and eddy current loss (B) reduce only hysteresis loss (C) reduce copper loss (D) reduce all of the above losses (E) None of the above.
391. A transformer has maximum efficiency at load copper loss (P.), is of full load. The ratio of its iron loss (P.) and full
.
Take your time but Please solve all question correctly.