The GMR Group is the leading global company in infrastructures with the core businesses comprising of Urban Infrastructure, Highways, airport and energy. The company has been involved and successfully completed several infrastructure projects shaking hands with the public as well as private companies. Its business has been expanded in the countries like Singapore, South Africa, Turkey and many others in the world. The GMR Group believe in hard work, knowledge and strong commitment to work. So the career at GMR is fast paced career with several opportunities available for the employees. So to help you to get a place in this reputated firm, here are GMR Placement Papers with technical interview questions.
Technical Questions to be asked in GMR:-
1.The synchronous speed of a motor with 6 poles and operating at 50 Hz frequency is ___.
2.The power consumption, in case of centrifugal loads (like pump, fan, blower etc.), proportional to ____.
b) square of speed
c) cube of speed
d) not applicable
3.What determines the thermal loading on the motor?
a) Duty/Load cycle
b) Temperature of the winding
c) Age of the motor
d) Ambient conditions
4.The maximum power will be transferred from a voltage source to a load when
a) the source impedance is half that of the load impedance
b) the source impedance is equal to that of the load impedance
c) the source impedance is twice that of the load impedance
d) both source and load impedances must be zero
5.Divergence theorem is applicable for
a) static field only
b) time varying fields only
c) both static and time varying fields
d) electric fields only
6.The measurement of frequency can be carried out with
a) Owen’s bridge
b) Wien’s bridge
c) Maxwell’s inductance-capacitance bridge
d) Schering’s bridge
7.By using feedback in control systems, the sensitivity to parameter variation is improved.This is achieved at the cost of
b) loss of system gain
c) transient response
8.In a transmission line terminated by characteristic impedance, Zo
a) There is no reflection of the incident wave.
b) The reflection is maximum due to termination.
c) There are a large number of maximum and minimum on the line.
d) The incident current is zero for any applied signal.
9.When a step-input is given to an op-amp integrator, the output will be
a) a ramp.
b) a sinusoidal wave.
c) a rectangular wave.
d) a triangular wave with dc bias.
10.When an amplifier is provided with current series feedback, its
a) input impedance increases and output impedance decreases
b) input and output impedances both decrease
c) input impedance decreases and output impedance increases
d) input and output impedances both increase
11.Bulk power transmission over long HVDC lines are preferred, on account of
a)low cost of HVDC terminals
b)no harmonic problems
c)minimum line power losses
12.In dielectric heating, the rate of heating cannot be increased by increasing the potential gradient because
a)Coupling problems become highly pronounced
b)Very high voltages are not easily available
c)Heating becomes non-uniform
d)Corona takes place
13.A converter which can operate in both 3-pulse and 6-pulse modes is
a)1-phase full converter
b)3-phase half wave converter
d)3-phase full converter
14.A highly stable resonance characteristic is the property of a ____ oscillator.
d) Wein Bridge
15.Transistor is a
a) Current controlled current device.
b) Current controlled voltage device.
c) Voltage controlled current device.
d) Voltage controlled voltage device.