First zone distance relay protects the transmission line section upto 25 % of its full length Its full length 80 % of its full length 50 % of its full length TRUE ANSWER : ? YOUR ANSWER : ?
The purpose of providing a choke in a tube light is To eliminate corona effect To improve the power factor To avoid radio interference To limit the current to an appropriate value TRUE ANSWER : ? YOUR ANSWER : ?
The corona effect can be minimized by increasing The length of the conductor Spacing between the conductors Diameter of the conductor Both spacing between the conductors and diameter of the conductor TRUE ANSWER : ? YOUR ANSWER : ?
Which lightning stroke is most dangerous? Direct stoke on tower top Direct stroke on ground wire Direct stroke on line conductor Indirect stroke on conductor TRUE ANSWER : ? YOUR ANSWER : ?
The circuit breaker generally used in railway traction is Bulk Oil CB Vacuum CB Air break CB Minimum Oil CB TRUE ANSWER : ? YOUR ANSWER : ?
What type of insulator is used if the direction of the transmission line is to be changed? Shakle type Strain type Suspebsion type Pin type TRUE ANSWER : ? YOUR ANSWER : ?
Under operating conditions, the secondary of a current transformer is always short ciruited because It is safe to human beings It avoids core saturation and high voltage induction It protects the primary ciruits It protects the secondary ciruits TRUE ANSWER : ? YOUR ANSWER : ?
Which type of back up protection is widely used for the protection of transmission lines? Control backup Breaker backup Remote backup Relay backup TRUE ANSWER : ? YOUR ANSWER : ?
A device connected to the computer which converts digital signals to analog and vice-versa is CPU Modem UPS Keyboard TRUE ANSWER : ? YOUR ANSWER : ?
DC series motors are best suited for traction work because Torque and speed are proportional to the square of the armature current Torque and speed are inversely proportional to the square of the armature current Its torque is proportional to the square of the armature current and speed is directional proporational to torque Its torque is proportional to the square of the armature current and speed is inversely proportional to torque TRUE ANSWER : ? YOUR ANSWER : ?