Equal to
Less than
Greater than
None of these
C. Greater than
τ²/ 2G × Volume of shaft
τ/ 2G × Volume of shaft
τ²/ 4G × Volume of shaft
τ/ 4G × Volume of shaft
Tensile in both the material
Tensile in steel and compressive in copper
Compressive in steel and tensile in copper
Compressive in both the materials
√(KT/m)
√(2KT/m)
√(3KT/m)
√(5KT/m)
Dual cycle, Diesel cycle, Otto cycle
Otto cycle, Diesel cycle, Dual cycle
Dual cycle, Otto cycle, Diesel cycle
Diesel cycle, Otto cycle, Dual cycle
Isothermal process
Adiabatic process
Hyperbolic process
Polytropic process
Constant pressure cycle
Constant volume cycle
Constant temperature cycle
Constant temperature and pressure cycle
The axis of load
An oblique plane
At right angles to the axis of specimen
Would not occur
Zero
Minimum
Maximum
Infinity
No stress
Shear stress
Tensile stress
Compressive stress
No heat enters or leaves the gas
The temperature of the gas changes
The change in internal energy is equal to the mechanical workdone
All of the above
M/I = σ/y = E/R
T/J = τ/R = Cθ/l
M/R = T/J = Cθ/l
T/l= τ/J = R/Cθ
wl/6
wl/3
wl
2wl/3
Two constant volume and two isentropic processes
Two constant volume and two isothermal processes
Two constant pressure and two isothermal processes
One constant volume, one constant pressure and two isentropic processes
10 MPa
30 MPa
50 MPa
100 MPa
The closed cycle gas turbine plants are external combustion plants.
In the closed cycle gas turbine, the pressure range depends upon the atmospheric pressure.
The advantage of efficient internal combustion is eliminated as the closed cycle has an external surface.
In open cycle gas turbine, atmosphere acts as a sink and no coolant is required.
0
1
γ
∝
Greater than
Less than
Equal to
None of these
(p2/p1)γ - 1/ γ
(p1/p2)γ - 1/ γ
(v2/v1)γ - 1/ γ
(v1/v2)γ - 1/ γ
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
3 to 6
5 to 8
15 to 20
20 to 30
Half
Same amount
Double
One-fourth
(σx/2) + (1/2) × √(σx² + 4 τ²xy)
(σx/2) - (1/2) × √(σx² + 4 τ²xy)
(σx/2) + (1/2) × √(σx² - 4 τ²xy)
(1/2) × √(σx² + 4 τ²xy)
50 %
25 %
20 %
30 %
-140 kJ
-80 kJ
-40 kJ
+60 kJ
There is no change in temperature
There is no change in enthalpy
There is no change in internal energy
All of these
Equal to
Less than
Greater than
None of these
The stress is the pressure per unit area
The strain is expressed in mm
Hook's law holds good upto the breaking point
Stress is directly proportional to strain within elastic limit
Wood
Coke
Anthracite coal
Pulverised coal
Pitch
Back pitch
Diagonal pitch
Diametric pitch
Equal to
Directly proportional to
Inversely proportional to
Independent of