High temperature heating medium (a petroleum product)
Product of coal tar distillation
Very heat sensitive material
None of these
A. High temperature heating medium (a petroleum product)
Fatigue strength
Creep strength
Resilience
Endurance limit
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'
Free electrons
Ions
Conduction electrons
Holes
Immobility of dislocation
Strain-ageing
Increase in Young's modulus
Strain hardening
Increase
Decrease
Remain unaffected
May increase or decrease; depends on the thickness of each layer
Graphite
Lead sulphide
Lead
Both (B) & (C)
Sequence of operation to be performed
Progress of work performed
Authorisation of work to be performed
Balancing of load on machines
Asbestos cement
Steel
Cement concrete
Stoneware
Below the yield point
Above the yield point
Below the elastic limit
At the elastic limit
CaF2
Ca3(PO4)2
CaCO3
CaCl2
Casting
Pattern
Draft
Distortion
Sinter
Coke
Iron ore
Limestone
Alumel
Rhodium
Constantan
Duralumin
Pewter
White
Babbitt
Gun
8
35
65
80
Wrought iron
Stainless steel
Mild steel
High speed steel
Pipe length
Pipe roughness
Fluid density & viscosity
Mass flow rate of fluid
0°K to 123°K
0°C to - 123°C
0°C to - 273°C
0°K to 273°K
Shear stress is maximum
Velocity gradient is flat
Density variation is maximum
Shear stress is zero
Low vapour pressure
Corrosive nature
High vapour pressure
High boiling point
Copper-lead alloys
Babbitts
Bronzes
Cermets
Hot temper
Hot hardness
Fatigue
Creep
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
Compared to the mass flow rate of cooling water, the rate of condensation of steam is invariably smaller
Maintaining vacuum on tube side is more difficult than that on the shell side
Water velocity can be increased conveniently to increase the overall heat transfer co-efficient because of its lower specific volume compared to steam
Condenser can act as a storage unit for condensed steam
80-120
200-300
600-800
1000-1100
Cast iron pipe for domestic water supply
Aluminium curtain rods
Stainless steel tubes used in furnitures
Any of these
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
0
1
1/2
1/3
Shear
Tensile
Compressive
None of these