A transformer is an electrical machine used to change the voltage of an alternating current that has the same frequency. Which is used to convert the voltage of the alternating current to the same frequency, that is, the transformer with low voltage strong alternating current in high voltage weak current, or high voltage weak current in low voltage strong current Transmits at the same frequency. The transformer is made of a magnetic circuit consisting of two characteristic coils, called primary coils and secondary coils. When the primary coil is connected to the alternating current supply, the alternating flux is formed in the plated core and a reversible force is induced in the secondary coil when this flux is connected to the secondary coil. This action is caused by induction between the two coils. Let's know more about Transformer In Physics.
1. The transformer is a which type of electrical machine?
A. Stationary
B. Alternator
C. Both of the above
D. None of these
2. Transformer winding mainly depends on...
A. Supply voltage
B. Winding turn
C. Second winding
D. All of the above
3. Transformer Oil acts as...
A. Coolant
B. Insulater
C. Lubricant
D. All of the above
4. Transformer works on which principle?
A. Fleming's Law
B. Faraday's Law of Electromagentic induction
C. Ampere's Law
D. All of the above
5. Which of the following is a necessary requirement to operate two Transformers in parallel?
A. Same identical Tap ratings
B. Same Polarity
C. Same X/R rating
D. All of the above
6. In a transformer under which condition efficiency will be higher?
A. Core Loss = Copper Loss
B. Core Loss is less than Copper Loss
C. Core Loss is greater than Copper Loss
D. None of these
7. Which of the following are the types of transformer windings?
A. Multi- Layer Helical Windings
B. Cross- Over Windings
C. Disc and Continuous Disk Windings
D. All of the above
8. How many cores are there in electrical transformer?
A. Two
B. Four
C. Six
D. Eight
9. Which of the following are the losses in the transformer?
A. Iron losses
B. Copper losses
C. Hysteresis losses
D. All of the above
10. Which of the following is the meaning of PRV in transformer?
A. Pressure Relief Valve
B. Power Relief Valve
C. Pressure Relief Value
D. None of these
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