• Home
  • Basics
  • Electrical Circuits
  • Power Systems
  • Power Electronics
  • MCQ

WatElectrical.com

Electricals Made Easy

You are here: Home / MCQ / Transformer Question & Answers

Transformer Question & Answers

January 30, 2023 By Wat Electrical

This article lists 100 Transformer MCQs for engineering students. All the Transformer  Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, interviews, or professionals who would like to brush up on the fundamentals of Transformer.

Simply, the transformer is described as a device that steps the voltages up or down. If the transformer designed is to step-up the voltages are raised and for step-down voltage, the outcome is decreased. Similarly, the current obtained at the output of step-up is decreased and for step-down, it is increased.

Transformers are voltage-controlled devices. It is utilized widely in the transmission and distribution of AC power. Michael Faraday was the first person to discuss transformers in 1831. The basic ideology behind the invention of the transformer is to balance the generated electricity for higher voltages.

The change in voltages supplied in transformers does not affect the frequencies. Mutual induction & Electromagnetic induction are the basic principles of the transformer. Mainly transformers are utilized for the transmission of electric energies during the transmission of power.

Transformers are utilized in distinct fields like distribution section, electric, and transmission consumption of energies. Transformers are categorized depending upon various factors they are voltage working ranges, medium inside the core, arrangement of windings, and location of installation.

1). Electric energy transferred from an AC circuit to the other circuits through __________?

Hint
2). What raises the voltages from the electric generators?

Hint
Read More about  Transformer
3). What changes voltage via Electromagnetic induction?

Hint
4). Transformer is a __________ device?

Hint
5). Who is the first person to discuss the idea of a transformer?

Hint
6). What is the principle involved in transformer?

Hint
7). Copper loss in transformers is dependent on _________?


Hint
8). Transformer loss of heat is dependent on ______?

Hint
9). The current flow is in one coil and the voltage induced in the second coil is __________?

Hint
10). __________ pass AC by involving the principle of Electro-magnetic Induction?

Hint
11). What tests the winding integrity in the transformer?

Hint
12). What is known as the Megger test?

Hint
13). Silica used to control the excess moisture in _________?

Hint
14). Which test in the transformer tests the winding ratios of the primary & secondary alignment of coils?

Hint
15). If the primary turns in a transformer are 100 with the secondary 10 turns. By what factor the voltage is reduced?

Hint
16). Insulation of transformer must have a greater value of resistance to pass _____________?

Hint
17). What tests the insulation systems' power losses in the transformer?

Hint
18). What should be the current's angle to pass the Power-factor test in the transformer?

Hint
19). Malfunctioning of insulation in the transformer is detected by ___________ test?

Hint
20). What are the various transformers based on the phases?

Hint
21). Based on function,the transformers are __________?

Hint
22). Which testing in the transformer ensures the wired circuits are correctly connected or not?

Hint
23). Which test is conducted by Ohmmeter?

Hint
24). What are the tests performed by the manufacturer of the transformer?

Hint
25). What are the various transformers classified according to usage?

Hint

Transformer MCQs for Students

26). What are the tests performed on the transformer at factories?

Hint
27). Which test on the transformer confirms the basic criteria of production?

Hint
28). Which test in the transformer confirms operational performance?

Hint
29). Before commissioning the tests performed on the transformer are _________?

Hint
30). What are the various transformers classified based on their core?

Hint
31). Transformer Ratio test is ______________ of transformers?

Hint
32). Which test in the transformer depends on the perfection of turns?

Hint
33). Which test is conducted on the three-phase type transformers?

Hint
34). Which test in the transformer detects the defect in the structure of magnetic cores?

Hint
35). Which test was performed before measuring DC resistances?

Hint
36). Properly grouped vectors are essential for ______________ of transformers?

Hint
37). Transformer with similar vector grounds have _________?

Hint
38). Dielectric tests are the type of _______ tests?

Hint
39). What are the tests that check the transformer's insulation?

Hint
40). Temperature rise tests in the transformer are included in _______?

Hint
41). Which test results are varied based on the temperature of the insulation?

Hint
42). Essential type of test is ________?

Hint
43). What is measured using insulation values of resistance?

Hint
44). What is CT?

Hint
45). What is PT?

Hint
46). What are voltage transformers?

Hint
47). Which transformer lowers the signals of current?

Hint
48). What are Potential Transformers?

Hint
49). What are Current Transformers?

Hint
50). Which transformer has fewer turns in the winding i.e., primary?

Hint

Transformer MCQs for Exams

51). Wound type transformer belongs to _________?

Hint
52). Primary winding carries higher currents in __________?

Hint
53). Which transformer has the conductor thin for primary windings?

Hint
54). Which has a higher ratio of transformation?

Hint
55). Primary winding and the power lines connected in the series format in _________?

Hint
56). Toroidal transformer belongs to __________?

Hint
57). How many types does a PT have?

Hint
58). How many cylinders does a Core-type transformer have?

Hint
59). Cylindrical coils placed on cylinders in __________?

Hint
60). What does a shell-type transformer consist of?

Hint
61). Which transformer contains Dual magnetic circuitry?

Hint
62). Which transformer has magnetic circuitry resemblance to a Wheel?

Hint
63). Secondary has more turns compared to primary in ___________?

Hint
64). What reduces the output voltages?

Hint
65). Secondary has fewer turns compared to primary in ___________?

Hint
66). Which transformer is known as a Consumption transformer?

Hint
67). Which transformer has 100% efficiency?

Hint
68). Voltage regulation is good in ____________?

Hint
69). The primary & secondary windings are independent in ____________?

Hint
70). At two points of secondary windings voltage will be _________ in the Isolation transformer?

Hint
71). Instrument transformer is ___________?

Hint
72). What isolates the primary from secondary windings?

Hint
73). What is the transformer categorized based on windings?

Hint
74). Turns are fixed in ___________?

Hint
75). Primary & Secondary windings are not insulated electrically in ________?

Hint

Transformer MCQs for Interviews

76). Which transformer does not have any liquid insulation?

Hint
77). What are the transformers classified depending on the insulation present?

Hint
78). Cast Resin Transformer belongs to the category of ___________?

Hint
79). What is VPI Transformer?

Hint
80). Which transformer uses the method of oil cooling for reducing temperature?

Hint
81). Immersed natural and forced cooling air transformers to belong to ___________?

Hint
82). Single-phase transformers are generally used as _________?

Hint
83). How many sets of winding are present in Three-phase transformers?

Hint
84). Why the transformer has laminated iron cores?

Hint
85). Which transformers are capable of transferring Radio-frequency currents?

Hint
86). What matches the impedance of the source with the load?

Hint
87). What is used as Voltage Regulators?

Hint
88). What transforms high currents?

Hint
89). Electricity is measured using ___________?

Hint
90). Electric leakage risk is reduced in ______________?

Hint
91). Which transformers are used for the home appliance?

Hint
92). Which transformer is known as a higher-capacity transformer?

Hint
93). Higher voltages of transmission network use __________?

Hint
94). Generating station use ____________?

Hint
95). What is the secondary rating of the wiring of CT?

Hint
96). ___________ is independent of burden?

Hint
97). What measures voltages in electric lines of power?

Hint
98). Relays & contactors are operated using _________?

Hint
99). Why test a transformer?

Hint
100). To transmit the power for a longer distance _________ is used?

Hint

For More MCQs

  • Single Phase Transformer Question & Answers
clock.png

Time's up

SEARCH HERE!

Recent Posts

  • Demand Factor : Factors, Load Calculation & Its Applications
  • Residual Current Device : Circuit, Working & Its Applications
  • Electron Flow : Working, Formula & Its Differences
  • Coefficient of Coupling : Derivation, Working & Its Example
  • Different Types of Resistors and Its Color Code Calculation
  • Eddy Current : Working, Advantages, Loss, Braking System & Its Applications
  • Voltage Follower : Circuit, Working, Purpose & Its Applications
  • Phase Shifting Transformer : Construction, Working & Its Applications
  • Non Inverting Op Amp : Circuit, Working, Derivation, Types and Applications
  • Shunt Reactor : Working, Types, Characteristics & Its Applications

Categories

  • Basics
  • Electrical
  • Electrical Circuits
  • Electrical Machines
  • Electrical Measurements
  • Electrical Projects
  • Electromagnetic Fields
  • Power Electronics
  • Power Plant
  • Power Systems

Copyright © 2021 · WatElectrical.com | Contact Us | Privacy Policy