Air
Water
Mercury
Alcohol
B. Water
Pipe roughness & pipe diameter
Fluid velocity
Type of flowing fluid
Both 'b' & 'c'
Fatigue strength
Creep strength
Resilience
Endurance limit
Guard the boiler in case of abnormal rise in steam pressure
Drain out water and sludge during its repair
Regulate the supply of water in boiler
Put out the fire in the furnace when the water level in the boiler falls to unsafe limit
Free expansion of an ideal gas
Adiabatic expansion of steam in turbine
Adiabatic compression of air
Ideal compression of air
Decreasing the surface area of the electrodes
Increasing the concentration of zinc sulphate solution
Increasing the surface area of the electrodes
Increasing the concentration of copper sulphate solution
Decreases with increase in strain hardening tendencies
Decreases with increase in hardness, in general
Depend on the composition, microstructure and physical & mechanical properties
Decreases with increases in tensile strength & decrease in grain size
Cast iron
Soft brass
Round specimen of ductile metal
Flat tensile specimen of ductile metal
Increase the heat loss
Decrease heat loss and will have no effect beyond that
Decrease heat flux
Reduce convection heat loss compared to conduction heat less
Thermal power
Hydroelectric power
Nuclear-fusion power
Solar power
Grain refinement
Increasing corrosion resistance
Reducing porosity
Improving fluidity
Alumel
Rhodium
Constantan
Duralumin
Blow down valve
Blow off cock
Fusible plug
Safety valve
Viscous force is larger than the inertia force
Inertia force is larger than the viscous force
Inertia force is larger than the surface tension force
Inertia force is larger than the gravitational force
Linearly
Exponentially
Logarithmically
Inversely
Stellite
Steel
Bronze
Lead
Steel
Cast iron
Aluminium
None of these
Filmwise condensation gives a lower heat transfer rate than the dropwise condensation
Suitable coating or vapour additive is used to promote film wise condensation
If a condensing liquid does not wet the surface dropwise, even then condensation will take place on it
Reynolds number of condensing liquid is based on its mass flow rate
Descaling
Shot blasting
Pickling
Skimming
Is trebled
Remains unchanged
Decreases by a factor of 3
Decreases by a factor of 1/3
0.3-0.4
12-14
3-4
20-25
Carbon
Volatile matter
Ash
Moisture
A1 is more alkaline than solution A2
A1 is highly acidic
A2 is very slightly acidic
Both (B) & (C)
The X-rays cannot be deflected by electric field unlike cathode rays
The intensity of X-rays can be measured by ionisation current produced due to the ionisation of gas by X-rays
The quality of X-rays can be controlled by varying the anode-cathode voltage
Crystal structure of a material can be studied by an electron microscope
Collar
Flanged
Bell and Spigot
Expansion
Are magnetised by eddy currents only
Are non-magnetic and cannot be magnetised
Are magnetised in direction opposite to the magnetic field
Can be magnetised in one direction only
0.25
0.45
0.70
0.95
5
15
30
45
Full annealing
Bright annealing
Patenting
None of these
Surface finish of the sheet is poor
Sheet material has been given substantial spring back
Starting sheet has planer anisotropy due to its texture
Starting sheet has normal anisotropy due to its texture
Negative charge
Positive charge
Zero charge
Positive or negative charge depending upon the nature of the cell