Zero
Minimum
Maximum
None of these
C. Maximum
60°
90°
180°
270°
Remains the same
Increases
Decreases
Is unpredictable
Same value
Higher value
Lower value
Lower/higher depending on steam flow
Lever safety valve
Dead weight safety valve
High steam and low water safety valve
Spring loaded safety valve
Initial conditions of steam
Back pressure
Initial pressure of steam
All of these
Equal to unity
Less than unity
Greater than unity
None of these
Equal power developed in each cylinder for uniform turning moment
Equal initial piston loads on all pistons for obtaining same size of piston rod, connecting rod etc. for all cylinders
Equal temperature drop in each cylinder for economy of steam
All of the above
0.18 MN/m²
1.8 MN/m²
18 MN/m²
180 MN/m²
Increases the workdone through the turbine
Increases the efficiency of the turbine
Reduces wear on the blades
All of these
Climatic conditions
Temperature of furnace gases
Height of chimney
All of these
10 to 15 %
15 to 25 %
25 to 40 %
40 to 60 %
Heat transfer takes place across cylinder walls
Work is done
Steam may be wet, dry or superheated after expansion
All of the above
To guide motion of the piston rod and to prevent it from bending
To transfer motion from the piston to the crosshead
To convert heat energy of the steam into mechanical work id) to exhaust steam from the cylinder at proper moment
None of these
12 m
1.52.5 m
23 m
2.53.5 m
Equal to the velocity of sound
Less than the velocity of sound
More than the velocity of sound
None of these
Choked
Under-damping
Over-damping
None of these
Absolute velocity at the inlet of moving blade is equal to that at the outlet
Relative velocity at the inlet of the moving blade is equal to that at the outlet
Axial velocity at inlet is equal to that at the outlet
Whirl velocity at inlet is equal to that at the outlet
Carnot cycle
Joule cycle
Stirling cycle
Brayton cycle
1 to 1.25m
1 to 1.75 m
2 to 4 m
1.75 to 2.75 m.
1.5 m, 4 m
1.5 m, 6 m
1 m, 4 m
2 m, 4 m
The steam is admitted on one side of the piston and one working stroke is produced during each revolution of the crankshaft
The steam is admitted, in turn, on both sides of the piston and one working stroke is produced during each revolution of the crankshaft
The steam is admitted on one side of the piston and two working strokes are produced during each revolution of the crankshaft
The steam is admitted, in turn, on both sides of the piston and two working strokes are produced during each revolution of the crankshaft
To determine the generating capacity of the boiler
To determine the thermal efficiency of the boiler when working at a definite pressure
To prepare heat balance sheet for the boiler
All of the above
50°C and normal atmospheric pressure
50°C and 1.1 bar pressure
100°C and normal atmospheric pressure
100°C and 1.1 bar pressure
Diverge from left to right
Diverge from right to left
Are equally spaced throughout
First rise up and then fall
Internally fired
Externally fired
Internally as well as externally fired
None of these
Equal to Carnot cycle
Less than Carnot cycle
More than Carnot cycle
Could be anything
Equal to
Lower than
Higher than
None of these
Reheating of steam
Regenerative feed heating
Binary vapour plant
Any one of these
Essentially an isentropic process
Non-heat transfer process
Reversible process
Constant temperature process
A steam turbine develops higher speeds
The efficiency of steam turbine is higher
The steam consumption is less
All of these