HAL Metallurgy Question Papers with answer 2016

HAL Metallurgy Question Papers with answer 2016.

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1. A dislocation represented by T is called:
(a) Positive edge dislocation
(b) Negative edge dislocation
(c) Positive screw dislocation
(d) Negative screw dislocation

2. The recrystallisation temperature of a cold worked material decreases with:
(a) Increase in the degree of deformation
(b) Increase in the initial grain size
(c) Increase in the temperature of cold working
(d) The presence of impurity
Electrical Engineering

1. In a thyrister full converter feeding a continuous load current, what is the duration each thyrister
conducts in a cycle?
(a) 60 0 (b) 90 0
(c) 120 0 (d) 180 0

2. In a three-phase induction motor, the rotor field runs at the following speed with Respect to the
stator structure:
(a) At synchronous speed in the direction of stator field
(b) At a slip speed in the direction of stator speed
(c) At synchronous speed in a direction opposite to that of stator field
(d) At zero speed