Protective Relay | Protective Relay Objective Type Questions and answers

1.  Protective relays can be designed to respond to

   A. Light intensity

   B. Temperature

   C. Resistance, reactance or impedance

   D. All of the above

2.  Protective relays are the devices that detect abnormal conditions in electrical circuits by measuring

   A. Voltage

   B. Current

   C. Constantly the electrical quantities which differ during normal and abnormal conditions

   D. Note the above

3.  The protective relays is provided to

   A. Provide additional safety to the circuit breaker in its operation

   B. Close the contacts when the actuating quantity attains a certain predetermined value

   C. Limit the arcing current during the circuit breaker operation

   D. Earth any stray voltage

4.  For the protection of a very long extra high-voltage lines, the productive relay used is

   A. Over currently with extremely inverse characteristics

   B. Percentage differential relay

   C. Reactance type distance relay

   D. Mho type distance relay

5.  Burden of a protective relay is the power

   A. Required to operate the circuit breaker

   B. Absorbed by the circuit of relay

   C. Developed by the relay circuit

   D. None of the above

1 2 3 4 5 6 7 8 9 10 Next>