AMD Technician Electrical Paper

ISTRAC Technician Electrical Paper 2019

This paper is also useful to you for AMD Technician Electrical exam 2020 which will be conducted on 16th Feb 2020 in Jaipur, Hyderabad, Nagpur & Jamshedpur cities.

Cables, generally used beyond 66 KV are _____
(a) Oil-filled
(b) S.L. type
(c) Belted
(d) Armoured

Two current carrying conductors placed side by side, experience a force of attraction
(a) When current direction of both conductors are same
(b) When current direction of both conductors are opposite
(c) Independent of the direction of current
(d) Only when one conductor is carrying current

A hydrometer is used to ______
(a) Measure the relative density
(b) Measure energy
(c) Measure polarization
(d) None of these

IGBT stands for
(a) Insulated Gate Bipolar Transistor
(b) Insulated Gate Tri-polar Transistor
(c) Insulated Base Bipolar Transistor
(d) Insulated Gate Bipolar Traic

The ammeter is connected in ____ to measure the current the circuit
(a) Series
(b) Parallel
(c) Series or Parallel
(d) None of the above

A 5 Amp to 7.5 Amp contactor is used to operate a 3-phase, 400 volts, 4 HP motor. The contactor shall be set to the current rating of
(a) 5 A
(b) 7.35 A
(c) 6 A
(d) 6.5 A

In an electrical socket, which connection provides easy path for the leakage current to flow
(a) The ground/ earth connected pin
(b) the neutral connected pin
(c) The cable/ wire itself
(d) The socket itself

The reason of laminating the armature core is ______
(a) To decrease the weight of the motor
(b) To decrease the reluctance of the core
(c) To decrease the eddy current loss
(d) To decrease the hysterisis loss

Which law states for relation between the current, voltage and resistance in a closed circuit at constant temperature?
(a) Kirchoff first law
(b) Kirchoff second law
(c) Joule’s law
(d) Ohm’s law

The current through a resistance (R) of 10 Ohms is 2 Amps for a given voltage of 20 volts across the resistor. Keeping the voltage unchanged to 20 volts, resistance is changed to 20 Ohms, what is the current through the resistance
(a) 1 Amp
(b) 2 Amp
(c) 4 Amp
(d) 0.5 Amp