Explore topic-wise MCQs in Engineering.

A single point thread cutting tool should ideally have

The work or surface speed for cylindrical grinding varies from

In order to prevent tool from rubbing the work __________ on tools are provided.

A fine grained grinding wheel is used to grind hard materials.

Euler's formula holds good only for

A vertical column has two moments of inertia (i.e. I_xx and I_yy ). The column will tend to buckle in the direction of the

The object of caulking in a riveted joint is to make the joint

Gantt chart is used for

The main object of scientific layout is

The probabilistic time is given by (where t_o = Optimistic time, t_p = Pessimistic time, and t_n = Most likely time)

Segmental chips are formed during machining

Internal gears can be made by

Cemented carbide tool tips are produced by powder metallurgy.

Side rake angle of a single point cutting tool is the angle

If the diameter of the hole is subject to considerable variation, then for locating in jigs and fixtures, the pressure type of locator used is

In the aircraft propellers

Intercooling in multi-stage compressors is done

A closed cycle gas turbine gives __________ efficiency as compared to an open cycle gas turbine.

Gas turbine as compared to steam turbine

The ratio of workdone per cycle to the stroke volume of the compressor is known as

The clearance volume in the compressor is kept minimum because it effects on volumetric efficiency.

A large clearance Volume in a reciprocating compressor results in

Intercooling in gas turbines

In a single acting reciprocating compressor, the suction, compression and delivery of air takes place in __________ of the piston.

The increase in pressure in a vane blower takes place first due to compression and then due to back flow of air.

While designing the refrigeration system of an aircraft, the prime consideration is that the

The heat transfer takes place according to

An electrolux refrigerator is called a __________ absorption system.

The type of rotary compressor used in gas turbines, is of

The heat transfer by radiation __________ a medium.

Thermal conductivity of water __________ with rise in temperature.

In case of solids, the heat transfer takes place according to radiation.

The critical radius is the insulation radius at which the resistance to heat flow is

During a refrigeration cycle, heat is rejected by the refrigerant in a

A water cooled condenser operates at a __________ condensing temperature than an air-cooled condenser.

The relative humidity decreases as air gets wet.

The temperature of ammonia after compression in a vapour compression system is

The subcooling in a refrigeration cycle

Nusselt number (N_N) is given by

The thickness of thermal and hydrodynamic boundary layer is equal if Prandtl number is

During sensible cooling of air __________ decreases.

Which of the following represents a heat pump?

In a psychrometric process, the sensible heat added is 30 kJ/s and the latent heat added is 20 kJ/s. The sensible heat factor for the process will be

The formation of frost on cooling coils in a refrigerator

The amount of radiation mainly depends upon the

For ammonia refrigerating systems, the tubes of a shell and tube condenser are made of

The highest thermal diffusivity is of

The angle included between the two lips projected upon a plane parallel to the drill axis and paralled to the two cutting lips, is called helix angle.

The wet bulb temperature lines, on the psychrometric chart, are curved lines.

The sensible heat factor during cooling and dehumidification process is given by (where h₁ = Enthalpy of air entering the cooling coil, h₂ = Enthalpy of air leaving the cooling coil, and h_A = Enthalpy of air at the end of dehumidification process)