Engine having carburettor
Diesel engine
Compression ignition engine
Both (B) & (C)
A. Engine having carburettor
Weaker in tension but stronger in shear
Weaker in shear but stronger in tension
Stronger in both shear and tension
The lap joints are easily made
Power saving per unit weight of air delivered
Moisture elimination in the inter-stage cooler
Increased volumetric efficiency
All (A), (B) & (C)
Insulator for heat & electricity transmission
Ferritic
Behave like paramagnetic materials
Superconductor
Make the plate softer
Burn oil & grease sticking to plate surfaces
Avoid plate distortion
Prevent cold cracks
Completely filled
Partially filled
Equally filled
Vacant
Soft
Hard
Tough
Ductile & malleable
Abrasion resistant
Corrosion resistant
Prone to season cracking
Machinable
TNT
CMC
RDX
Lead azide
Gamma rays
X-rays
Microwaves
Gas welding
Compact & rugged construction with an accuracy of 0.1 to 1%
No moving parts and incurs negligible deflection under load
Provision of thermal compensation and is hermetically sealed
All 'a', 'b' & 'c'
Brass
Aluminium
Copper
Lead
75°C
373°K
150°C
Room temperature
Applies to elastic deformation
Applies beyond limit of proportionality in stress-strain curve
States that stress is inversely proportional to strain upto elastic limit
None of these
Elastic
Ultimate
Yielding
Breaking
A, C, B, D
D, B, C, A
D, C, B, A
D, A, B, C
Refine coarse grain structure obtained during hot working
Improve ductility
Improve yield strength
Improve mechanical properties
Precedence relationship
Resource idleness
Resource restriction
Necessary time delay
Both specific humidity & dry bulb temperature increases
Both specific humidity & dry bulb temperature decreases
Specific humidity decreases & dry bulb temperature increases
Specific humidity increases & dry bulb temperature decreases
10
20
30
40
Makes it usable in almost all magnetic circuits where alternating current is used
Increases its electrical resistivity and decreases the hysteresis loss
Is present upto 5% & 4% respectively when used in transformers & motor armatures
All 'a', 'b' & 'c'
Work is done
Heat transfer takes place
Mass flow occurs across the boundary of the system
No chemical reaction takes place within the system
Less than the wet bulb temperature
More than the wet bulb temperature
Equal to the wet bulb temperature
Equal to the ambient temperature
Casting
Pattern
Draft
Distortion
White
Cast
Wrought
Pig
Higher, as it gives higher wavelength
Lower, as it gives higher wavelength
Higher, as it gives shorter wavelength
Lower, as it gives shorter wavelength
Number
Weight
Radius
None of these
10
30
50
80
Free expansion of an ideal gas
Adiabatic expansion of steam in turbine
Adiabatic compression of air
Ideal compression of air
Both annealing and normalising release the internal stresses of the material besides improving the mechanical properties
Low carbon steel does not respond to the heat treatment for hardening of the material, hence it is subjected to case hardening or surface hardening processes like cyaniding, carburising, nitriding etc., which produces high carbon outer layers resulting in increase of surface hardness
Induction hardening and flame hardening techniques are also used for surface hardening
Martempering of a material is a hardening process
Fuel cells
Photo voltaic cell
Magneto hydrodynamic generator
None of these