Electronic
Structural
Process
Heavy
A. Electronic
To reduce the head loss in discharge
To increase the pump efficiency
To collect liquid from the periphery of the impeller and to transmit it to the delivery pipe at constant velocity
To increase the pump discharge rate
Specific gravities
Densities
Gas characteristic constants
Molecular weights
Polymerisation
Photochemical reaction
Oxidation
None of these
1 kg/cm2
1 bar
1 atmosphere
1 kilo Pascal
Flux
Slag
Protective layer
Binder
Induction motor
Electrostatic precipitator
Fast breeder reactor
Magneto hydrodynamic generator (MHD)
Make the plate softer
Burn oil & grease sticking to plate surfaces
Avoid plate distortion
Prevent cold cracks
370
340
320
300
Beryllium
Zirconia
Alumina
Magnesia
Manganese
Magnesium
Vanadium
Copper
Arsenides of heavy metals
Antimonides of heavy metals
Arsenides & antimonides of heavy metals
Iron, cobalt and nickel
Brake linings
Bearings
Carbide tool tips
All 'a', 'b' and 'c'
Electrical resistance welding
Die casting
Semi-centrifugal casting
Continuous casting
Joule
Carnot
Rankine
Brayton
Whose oxide/ore is not reduced by carbon
Which fall in the category of alkali & alkaline earth metals
Which stands higher in the electrochemical series of the metal
All (A), (B) & (C)
Octane number of fuel is decreased
Fuel supply for ignition is not sufficient
Vaporisation of the fuel is decreased
Pour point of fuel decreases
Tempering
Annealing
Normalising
Carburising
Tempered
Normalised
Annealed
Hardened
0
∞
1
0.5
4
6
8
12
10
50
200
1000
Mercury
Sodium
Calcium
Magnesium
Ferromagnetic
Semi-conductor
Paramagnetic
Ferroelectric
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
Can be determined only experimentally
Can be determined from the stoichiometry of the reaction
Cannot be zero
Can be fractional
14 : 1
22 : 1
25 : 1
4 : 1
R ln 2
-R ln 2
3 R ln 2
-3R ln 2
Decreases with the increase of concentration of the solute
Increases with the increase of concentration of the solute
Remains constant
Is unity at infinite dilution
Seam welding, projection welding & spot welding are the classification of electrical resistance welding
Electrode tip in spot welding is of copper and the tip diameter should be equal to t (where, t = plate thickness to be welded)
In spot welding, two pieces to be joined are overlapped and placed between two electrodes
Mild steel sheet cannot be spot welded