
National Thermal Power Corporation (NTPC) Executive Trainee Sample Questions
Mechanical Engineering
An engine operates between temperature limits of 900˚K and T2, and another
between T2 and 400˚K. For both to be equally efficient , T2 will be equal to:
40% of the incident radiant energy on the surface of a thermally
transparent body is reflected back. If the transmissivity of the body be 0.15,
then the emissivity of surface is:
The property of a material by virtue of which it can be beaten or rolled
into plates is called:
- ductility
- malleability
- plasticity
- elasticity
Electrical Engineering
Twelve identical wires of resistance 6Ω each are arranged to form the
edges of a cube. The effective resistance between the opposite corners of the
cube is:
A d.c shunt motor runs at 200 V supply, if the armature current is 20 A
and resistance of the armature is 0.5 ohm, the back e.m.f developed will be:
A 0-25 A ammeter has guaranteed accuracy of 1% of full scale reading. The
current measured by this instrument is 5 A. The limiting error in percentage is:
Civil Engineering
A cantilever beam curved in plan and subjected to lateral loads will
develop at any section:
- bending moment and shearing force
- twisting moment and shearing force
- bending moment and twisting moment
- bending moment, twisting moment & shearing force.
The force of attraction between the individual particles of soil which
keeps the soil particles bound together is known as:
- Compaction
- Friction
- Cohesion
- Dilatancy
The dimensions of pressure gradient in a fluid flow are:
- M L-1 T 2
- M L-2 T -2
- M L-3 T -2
- M-1 L-3 T -2
Control & Instrumentation Engineering
1 The D flip-flop and T flip flops are respectively used as: