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
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