A right angled triangle
An isosceles triangle
An equilateral triangle
A rectangle
A. A right angled triangle
Breaking stress
Fracture stress
Yield point stress
Ultimate tensile stress
Change in volume to original volume
Change in length to original length
Change in cross-sectional area to original cross-sectional area
Any one of the above
Isothermal process
Adiabatic process
Free expansion process
Throttling process
Isochoric process
Isobaric process
Hyperbolic process
All of these
Constant pressure process
Constant volume process
Constant pvn process
All of these
Two isothermals and two isentropic
Two isentropic and two constant volumes
Two isentropic, one constant volume and one constant pressure
Two isentropic and two constant pressures
Pitch
Back pitch
Diagonal pitch
Diametric pitch
Change
Do not change
Both (A) and (B)
None of these
Partial combustion of coal, coke, anthracite coal or charcoal in a mixed air steam blast
Carbonisation of bituminous coal
Passing steam over incandescent coke
Passing air and a large amount of steam over waste coal at about 650°C
Mechanical and fluid friction
Unrestricted expansion
Heat transfer with a finite temperature difference
All of the above
(p1 v1 - p2 v2)/(γ - 1)
[m R (T1 - T2)] /(γ - 1)
[m R T1/(γ - 1)][1 - (p2 v2 /p1 v1)]
All of these
Its temperature will increase
Its volume will increase
Both temperature and volume will increase
Neither temperature not volume will increase
Equal to
Less than
Greater than
None of these
Tension
Compression
Bearing
Any one of the above
δQ = T.ds
δQ = T/ds
dQ = ds/T
None of these
4/7
11/4
9/7
All of these
Same torque
Less torque
More torque
Unpredictable
Hard coke
Soft coke
Pulverised coal
Bituminous coal
When coal is first dried and then crushed to a fine powder by pulverising machine
From the finely ground coal by moulding under pressure with or without a binding material
When coal is strongly heated continuously for 42 to 48 hours in the absence of air in a closed vessel
By heating wood with a limited supply of air to a temperature not less than 280°C
Brayton cycle
Joule cycle
Carnot cycle
Reversed Brayton cycle
Uniform throughout
Increase uniformly
First increase and then decrease
Increase uniformly first and then increase rapidly
d/4
d/8
d/12
d/16
Constant pressure cycle
Constant volume cycle
Constant temperature cycle
Constant temperature and pressure cycle
Maximum shear stress
No shear stress
Minimum shear stress
None of the above
Cd⁴/D3n
Cd⁴/2D3n
Cd⁴/4D3n
Cd⁴/8D3n
Greater than
Less than
Equal to
None of these
No stress
Shear stress
Tensile stress
Compressive stress
Not deform
Be safest
Stretch
Not stretch
Petrol engine
Diesel engine
Reversible engine
Irreversible engine
Working substance
Design of engine
Size of engine
Temperatures of source and sink