Transformer Atul Tayade Sir Quiz

Questions and Answers

Hysteresis loss does not depend on which of the following?

Volume of the substance

What leads to the movement of the baffle plate in a transformer?

Level of transformer oil falls

Which factor determines a Ferroresonant transformer regulator?

Volume of the substance

Which type of transformer is used when the secondary voltage is greater than the primary voltage?

Step Up Transformer Signup and view all the answers

What is the primary determinant of hysteresis loss in a transformer?

Movement of baffle plate Signup and view all the answers

What is the principle used in transformers?

Induction Signup and view all the answers

Which type of transformer is an example of a Variable Voltage Transformer (VVT)?

Static-Induced VVB Signup and view all the answers

What are the different types of windings in a transformer?

Cross-over, Sandwich, Helical, and Disc Signup and view all the answers

What type of relay is used in oil immersed transformers for protection?

Buchholz Relay Signup and view all the answers

What happens if gas bubbles are not formed due to faults in an oil immersed transformer?

Buchholz Relay won't operate Signup and view all the answers

What is the relation between input (IA) and output (IB) current and input (VA) and output (VB) voltage in a transformer?

$VA.IA = VB.IB$ Signup and view all the answers

Study Notes

a) Transformers come in various types: a) Constant Voltage Transformer (CVT), b) Variable Voltage Transformer (VVT), c) Auto Transformer, d) Distribution Transformer. b) Induction principle is used in Transformers. c) Spiral core Transformer, Oil immersed, Spiral Self-Cooled Transformer, and Dry Type Transformer are different transformer types. d) Transformers up to 25 kVA size are selected for implementing various cooling methods. e) Static-Induced VVB (Statically Induced Voltage Variable Transformer) is an example of a VVT. f) Cross-over, Sandwich, Helical, and Disc are different types of windings in a transformer. g) If the secondary voltage is greater than the primary voltage, it is a Step Up Transformer. h) Buchholz Relay is a protection relay used in oil immersed transformers. It won't operate if gas bubbles are not formed due to faults. i) An alarm is given when faults happen, and it's installed in oil immersed transformers. Gas bubbles are formed inside the transformer due to faults. j) The relation between input (IA) and output (IB) current and input (VA) and output (VB) voltage in a transformer is: VA.IA = VB.IB.