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Q) What is the possible way to destruct explosive easily?

  • By burying under ground
  • By throwing in water
  • by burning them throwing in fire
  • cannot be destroyed
Solution

Q) When any accident resulting serious bodily injuries to any person/loss of life occurs in a mine, the manager shall inspect the site of accident as soon as possible, inquire into the causes & circumstances attending the accident. The copy of result of such enquiry, plan & section of the site of accident showing the details & photographs if practicable shall be submitted to________?

  1. CIM
  2. RIM
  3. CIM , RIM & Electrical Inspector
  4. CIM ,RIM & DM
  5. CIM & RIM
Solution

Q) All conductors of an earthling system shall have conductivity, at all parts & all joints at least equal to________of the largest conductor used?

  1. 40%
  2. 50%
  3. 60%
  4. 30%
  5. None of these
Solution

Q) Cables & conductors where connected to motors, transformer, switch gear & other apparatus shall be installed so that________?

  1. They are mechanically protected by securing attaching the metallic covering to the apparatus
  2. The insulating material at each cable end is efficiently sealed so as to prevent the diminution of its insulating properties
  3. Only A
  4. Both A & B
Solution

Q) All parts & all joints at least equal to________of the conductivity of the largest conductor enclosed by the said metallic covering?

  1. 40%
  2. 50%
  3. 60%
  4. 30%
Solution

Q) Distance between any two consecutive bonds is not more than________measured along either cable?

  1. 20 m
  2. 15 m
  3. 50 m
  4. 30 m
Solution

Q) Where voltage exceeding_____but not exceeding____direct current system is used?

  1. 10000 volts/6600 volts
  2. 12000 volts/6500 volts
  3. 15000 volts/6300 volts
  4. 250 volts/650 volts
  5. None of these
Solution

Q) If fixed plant voltage may be permitted upto________if the bolted type plug is used?

  1. 250 volts
  2. 125 volts
  3. 750 volts
  4. 30 volts
  5. 650 volts
Solution

Q) Where any circuit is used for the remote control/electric interlocking of apparatus the circuit voltage shall not exceed_________?

  1. 250 volts
  2. 50 volts
  3. 30 volts
  4. 650 volts
Solution

Q) If the neutral/mid point of the system is connected with the earth, the voltage between the phases does not exceed__________?

  1. 250 volts
  2. 125 volts
  3. 30 volts
  4. 650 volts
Solution

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