IOCL interview questions-

Q1. What is the direction of rotation of blades in a table fan and in a ceiling            fan ?

Answer-

anti-clock wise because stator rotating here.but in table fan rotor rotate when electricity supplied.

Q2.protection used in transformer ? 

1. Transformer-Electrical Protection Types:

• Over Current/Earth Fault-50/51Protection
• Under Impedance/Distance  relay Protection-21
• Differential Current Protection-87
• Restricted Earth fault Protection-64H
• Three Phase Overload Protection-49
• Over Fluxing Protection-24
• Over Voltage-59/Under Voltage-27 Protection

Q3.Why breather called breather ? 

Q4.Working of conservator tank.?

 Q5.Speaker of parliament ?