Explore topic-wise MCQs in Engineering.

Optical activity is a/an __________ property.

Percentage of differential pressure lost in a venturimeter with a tapering of 15 may be about

Diamagnetic materials

During sensible heating of humid air

Stresses encountered in the metal forming processes are less than the __________ of the material.

Fibre reinforced plastic (FRP) are

X-rays are

__________ are not emitted by radioactive substances.

If Reynolds number is greater than 1, then the

Which of the following is a permanent fastening?

Which of the following metals can not be extracted by pyrometallurgical process from its sulphide ore?

Load cells used for the measurement of weight has

Heat transfer by __________ is almost absent in case of fluidised bed drying operation.

Highest cutting speed is achieved by the __________ tool material.

Stainless steel is welded using

'Amortization' in respect of financial obligation of a company means the

Hydraulic intensifier is used for increasing the

Transition length for a turbulent fluid entering into a pipe is around __________ times the pipe diameter.

Pascal's law is valid, only when the fluid is

Pick out the Kozney-Karman equation (valid for low N_Re) for fluid flow through a packed bed of solids.

One dimensional fluid flow implies the

The discharge through a venturimeter depends upon

The pressure and power requirement of a gas fan at constant speed & capacity varies __________ the gas density.

Gradually varied flow in open channel is a/an __________ flow.

At low Reynolds number

Pressure difference between two points in vessels, pipelines or in two different pipelines can be measured by a differential manometer. The pressure difference measured as the mm of water coloumn in case of mercury-water, differential manometer is equal to (where, H = difference in height of mercury column in mm).

What is the ratio of displacement thickness to nominal thickness for a linear distribution of velocity in the boundary layer on a flat plate ?

Hydraulic mean radius for flow through packed bed of spherical particle of size, 'D_p, with porosity ' ' is

Slugging occurs in a fluidised bed, if the bed is

The Reynolds number for an ideal fluid flow is

The most prominent single cause of corrosion in boilertubes, drums, economisers and steam superheaters in a thermal power plant boiler is the

A gas

Pick out the wrong statement about powder metallurgy technique.

__________ number is sometimes used in place of Grashoff number in free convection heat transfer.

The type of pump used for lifting large quantity of sewage is a __________ pump.

Wrought iron does not have

Boiling point of water gets lowered at high altitudes (e.g., hills), because

Thermal diffusivity of a refractory brick is high, when its __________ is high.

High porosity refractory bricks have

Refractories are dried in the

Cermets are combination of ceramic and metallic materials due to which they have high strength & resistance to high temperature. Cermets are used in the

Hot metal runner in blast furnace are lined with __________ bricks.

Spray test determines the __________ of refractories.

Which one expands on heating ?

Refractoriness/fusion points of 'superduty' refractories is __________ C.

Presence of MgO in alumino-silicate refractories __________ its refractoriness.

Spalling of silica bricks occurs due to abrupt volume changes, when it is cooled below a temperature of __________ C.

Walls, roofs & combustion chambers of annealing furnaces are made of __________ bricks.

Water content in ground refractory material to be shaped into bricks by hand moulding is about __________ percent.

Firing temperature is minimum (1250-1400 C) for __________ bricks.