Q.1.
Production of one ton of steel plate in a modern integrated steel plant in India consumes about __________ kWh of electricity.
Q.2.
The minimum temperature to which the water can be cooled in a cooling tower is the __________ temperature of air.
Q.3.
The path and movements followed by men, materials & equipments in executing the activities is indicated by the
Q.4.
The power of a low capacity prime mover is most suitably measured by a __________ type dynamometer.
Q.5.
Which of the following is not a charge material for cupola ?
Q.6.
The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for __________ at room temperature.
Q.7.
The term 'Value' in value engineering technique refers to the __________ cost of the product.
Q.8.
The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the __________ point of the material.
Q.9.
The pressure outside a bubble/droplet of liquid is __________ the internal pressure.
Q.10.
While the recrystallisation temperature for pure metals is 0.3 Tm, the same for alloys is equal to __________ x Tm (where, Tm Melting temperature).
Q.11.
What is the critical radius of insulation (cms) for a metallic cylinder, if the convective heat transfer co-efficient with the ambient atmosphere is 5 W/m². °K ? Thermal conductivity of metal and insulation material are 40 and 0.1 W/m.°K respectively.
Q.12.
Minimum temperature upto which water can be theoretically cooled down in the cooling tower by evaporative cooling is equal to the __________ temperature of air.
Q.13.
The minimum temperature to which the water can be cooled in a cooling tower is the __________ temperature of air.
Q.14.
To counteract the bad effects of strain hardening on a cold formed part, it must be
Q.15.
A good abrasive
Q.16.
On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the __________ of the input signal.
Q.17.
__________ can not be forged.
Q.18.
Production of one ton of paper in Indian paper industry consumes about __________ kWh of electricity.
Q.19.
A fluid is termed as the Newtonion fluid, when the shear stress is __________ the velocity gradient.
Q.20.
On being hit with a hammer, __________ will readily fracture.
Q.21.
Tumbling is the process of improving the __________ of the materials/parts.
Q.22.
Natural water contains approximately __________ percent of heavy water.
Q.23.
The following is a typical anionic collector used in flotation.
Q.24.
With increase in compression ratio, the volumetric efficiency of air compressor
Q.25.
M10 index of coke indicates its
Q.26.
Heat flow across a hollow sphere of inner radius 'r₁' and outer radius 'r₂' is directly proportional to
Q.27.
A freely floating object is stable, if its centre of buoyancy
Q.28.
__________ welding will be the most suitable for butt welding two 20 cms thick boiler drum mild steel plates.
Q.29.
Lead is poured into the joint between two- __________ pipes.
Q.30.
The hardenability of steel decreases with
Q.31.
Vibration upto 100 kilo hertz can be most accurately measured by a __________ type accelerometer.
Q.32.
When metals are heated to high temperature, their __________ increases in general.
Q.33.
According to maximum shear stress failure criterion, yielding in material occurs, when the maximum shear stress is equal to __________ times the yield stress.
Q.34.
Isotropic materials have the same __________ in all the directions.
Q.35.
The thickness of oxide film is y at time t. If K₁, K₂ and K₃ are the temperature dependent constants, the parabolic law of oxidation is given by
Q.36.
What is the range of tempering temperature (°C) for most of the materials ?
Q.37.
An atom bomb works on the principle of
Q.38.
Damage to metal surface by mechanical action is called
Q.39.
Which of the following phenomenon will exhibit the minimum heat transfer?
Q.40.
__________ are normally subjected to sub-zero treatment.
Q.41.
Water-tube boiler is the one, in which
Q.42.
The expected efficiency of a single rivetted lap joint is of the order of 50%. If the thickness of the plate is increased four times, then the rivet diameter will have to be increased __________ times.
Q.43.
Insulation of liquid surface can be achieved by __________ on top of its surface.
Q.44.
Streaklines, streamlines & pathlines are almost identical for __________ fluid flow.
Q.45.
Austenite is not
Q.46.
In the acid Bessemer process, the hot metal should have the following com-positon.
Q.47.
The preferred alloying element for low temperature applications of steel is
Q.48.
Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an __________ body.
Q.49.
Screws are specified by their __________ diameters.
Q.50.
Primary designation of steel is based on its