Transformer Objective Questions and Answers pdf

In this post, we are going to read you “Important Transformer Objective Questions Answers” | These questions are of multiple choice type which you can use for your practice.

Transformer Objective Questions
Transformer Objective Questions

Transformer Objective Questions and Answers

01. Static Electromagnetic Induction is Adopted in the following AC Machine ?

  1. Generators
  2. Alternators
  3. Transformer
  4. All Of The Above
Transformer

02. The Function of a Transformer is to –

  1. increase or Decrease DC Voltage
  2. Increase or Decrease AC Voltage
  3. Increase or Decrease Frequency of AC Voltage
  4. None of the Above
Increase or Decrease AC Voltage

03. The Silica Gel in a Breather of a Transformer is –

  1. To Prevent Entry of Dust to the Transformer
  2. To Prevent Entry of Moisture into the Transformer
  3. To maintain the oil level
  4. To Avoid Overflow of oil
Moisture

04. The Principle Of Mutual Induction is Used in –

  1. transformer
  2. DC Motor
  3. DC Generator
  4. Synchronous Motor
Tarnsformer

05. Regulation of a Transformer Depends On –

  1. Precentage of load
  2. Power factor of load
  3. Independent of load
  4. load has no effect on regulation
power factor of load

06. if the Transformer oil is cooled using a fan blowing the air throght the radiator tubes the name plate may Contain

  1. ONAN
  2. OFAF
  3. ONAF
  4. OFAN
ONAF

07. The Transformer Ratio of a Transformer is given By –

  1. N2/N1
  2. V2/V1
  3. I1/I2
  4. All of the above
All of the Above

08. dynamic Inductance is Not Adopted in –

  1. DC Generator
  2. AC Generator
  3. DC & AC Generator
  4. Transformer
Transformer

09. One of the Important Qualities of the Oil used In the Transformer is –

  1. High Dielectric Strngth
  2. High Viscosity
  3. High Viscosity Index
  4. Low Pour Point
High Dielectric Strngth

10. The Purpose of providing oil in the Transformer is to

  1. Provide Cooling
  2. Provide Cooling and Insulation
  3. Provide Insulation
  4. Avoid Overloading
Avoid overloading

11. Generators and Transformer Works on The principle of –

  1. Faraday’s Laws of Electromagnetic Induction
  2. Neuton Law of motion
  3. Faraday’s Laws of Electrolysis
  4. None of the Above
Faraday’s Laws of Electromagnetic Induction

12. In the Use of Current Transformer one Important Aspect to be kept in mind is –

  1. Its Temprature Should be Continously Monitored
  2. Its Secondary Should Never Be Opened and Always it Should be Connected with some burden
  3. It Should Be oil immersed Always
  4. It Should not be used for high voltage systems
Its Secondary Should Never Be Opened and Always it Should be Connected with some burden

13. ………… Welding Machine is Used in Resistance Welding –

  1. Welding Generator
  2. Step Down Transformer
  3. Step Up Transformer
  4. Rectifier Welding Machine
Step Down Transformer

14. The Welding Transformer is a ……….. Type

  1. Step Up Transformer
  2. Self Induced
  3. Step Down
  4. None Of The Above
Step Down

15. The Input Side of the Single phase transformer is called as ……….

  1. Primary Side
  2. Secondary Side
  3. High Voltage Side
  4. Low Voltage Side
primary Side

16. In Which Material Core of the Transformer is Constructed ?

  1. Silicon Iron Steel
  2. Mild Steel Iron
  3. Carbon Steel Iron
  4. Pig Iron Steel
Silicon Iron Steel

17. If The Full Load Iron Loass of the transformer is 1000 watt, what will be the iron loass at half load ?

  1. 125 watt
  2. 250 watt
  3. 500 watt
  4. 1000 watt
1000 watt

18. The Standard Values of Rated Secondary Current Of The Current Transformer is …..

  1. 2 Amp
  2. 3 Amp
  3. 5 Amp
  4. 10 Amp
5 Amp

19. What Will Be the Colour of the silica Gel, After it absorbs moistrue from air ?

  1. Blue
  2. Brown
  3. Violet
  4. Pink
Blue

20. The Output Side of the Single Phase Transformer is Called as …

  1. Secondary
  2. Primary
  3. Starting
  4. Running
Secondary

# Transformer Objective Questions ans Answers

Also Read :-

Electrical Engineering mcq

01. The Resistance of Value R Ohms each are Connected in delta the equivalent star will have each resistance of value

  1. R ohm
  2. R/3 ohm
  3. Root 3 R Ohm
  4. 3R Ohm
R/3 Ohm

02. The Domestic Installation is Connected in ….

  1. Series
  2. Series – Parallel
  3. Parallel- Series
  4. Parallel
Parallel

03. The Peak Factor of the sinusoidally varying quantity is –

  1. 1.732
  2. 1.414
  3. 1.11
  4. 0.707
1.414

04. The Standard Power Supply Frequency in Our Country is

  1. 25Hz
  2. 50H
  3. 60Hz
  4. 100HZ
50Hz

05. The Power Consumed By a Coil is 300w, When 30v dc us applied and 108w when 30v ac is applied the reactance of the coil will be

  1. 3 ohm
  2. 4 ohm
  3. 5 ohm
  4. None of these
4 ohm

06. One of the two wattmeter connected to measure the power in a balanced 3 phase load will indicated zero when load pf is

  1. Zero
  2. Unity
  3. 0.5
  4. None of these
0.5

07. Three Similar inductive coil of resistance 20ohm and reactance of 30 ohm are connected in mesh across a 3 phase 400v supply, what will be phase current

  1. 11.1
  2. 1.11
  3. 111
  4. 0.111
11.1

08. Three Delta Connected Impedance Z=(30+40j) ohm per phase are connected across 398.36v, 3 phase supply what will be the power

  1. 571.2865w
  2. 57.12865w
  3. 5712.86w
  4. 5.71w
5712.86w

09. Which of the following is not a main part of rivet

  1. Head
  2. Shank
  3. Point
  4. Thread
Thread

10. The amount by which the two rods to be joined are drawn togather is called a

  1. Draw
  2. Portrary
  3. Lead
  4. Pitch
Draw

11. Empire tape is

  1. Varnished cambric
  2. Valcanised Rubber
  3. Impregnated Paper
  4. None Of these
Varnished Cambric

12. Which Of the Following insulation is used in cable?

  1. Varnished Cambric
  2. Rubber
  3. Paper
  4. Any of these
Any of these

13. Pressure cable are generally not used beyound

  1. 11 KV
  2. 33 KV
  3. 66 KV
  4. 132 KV
66 KV

14. Copper as conductance for cable is used as

  1. Annealed
  2. Hardness and Temperature
  3. Hard Drawn
  4. Alloy with chromium
Annealed

15. The Breakdown voltage of a cable depends on

  1. Pressure of moisture
  2. Working temperature
  3. Time of application of the voltage
  4. All of these
All of these

16. The Surge Resistance of cable is

  1. 5 ohm
  2. 20 ohm
  3. 50 ohm
  4. 100 ohm
50 ohm

17. Low Tension Cables are Generally used upto

  1. 200 volt
  2. 500 volt
  3. 700 volt
  4. 1000 volt
1000 volt

18. The Proces of producing chemical Decomposition of a compound by passing electricity through through the compound is called

  1. Electrolysis
  2. Electroplating
  3. Electrolyte
  4. None Of these
Electrolysis

19. Which the property of the electricity is responsible for the use of fuse wire in household wiring

  1. Chemical Effect
  2. Heating Effect
  3. Magnetic Effect
  4. All of these
Heating Effect

20. Which of the following is bad conductor of electricity

  1. Distilled Water
  2. Alcohal
  3. Salt Water
  4. Tap Water
Distilled Water

21. When Electric Current is passed Through Copper sulphate solution the copper decomposition takes place on the electrode connected to

  1. Positive Terminal of the battery
  2. Negative Terminal of the battery
  3. Any Terminal
  4. None Of these
Negative Terminal of the battery

22. When Electric Current is passed through bulb, the bulb give light because of

  1. Electric Effect of Current
  2. Heating Effect of current
  3. Glowing Effect of current
  4. Light Effect of current
Heating Effect of current

23. Type of wire Depends on

  1. Location and consumer budget
  2. Durability and cost
  3. safety
  4. All off these
All of these

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