INDUSTRIAL WIRING PRACTICE - Quiz

1) Which place the control ON/OFF switches is to be placed a industrial motor wiring?

Near the control panel Near the input main Near the entrance Near the motor

2) Why over load relay coil is wound with thick gauge of copper wire?

To carry the line voltage To reduce voltage drop To carry load current To reduce the power loss

3) Which is the purpose of single phasing preventor in 3 phase motor circuit?

To protect the motor from damage To run the motor continuously at single phasing To regulate the supply voltage To protect the motor from over load

4) What is the formula to calculate the value of insulation resistance while testing the wiring?

I.R = (Leakage Current/supply Voltage) I.R = (Load Current/supply Voltage) I.R = (supply Voltage/Leakage Current) I.R = (supply Voltage/Load Current)

5) Which is the unit of insulation resistance?

Milli ohm Ohm kilo ohm Mega ohm