41
The draught in locomotive boilers is produced by a
A)
Chimney
B)
Centrifugal fan
C)
Steam jet
D)
None of these
Answer & Solution
Answer: Option
C
42
The function of a cross-head is to guide motion of the _________ and to prevent it from bending.
A)
Piston rod
B)
Connecting rod
C)
Eccentric rod
D)
Valve rod
Answer & Solution
Answer: Option
A
A)
9.81 Joules
B)
102 Joules
C)
427 Joules
D)
None of these
Answer & Solution
Answer: Option
A
44
The working pressure range for a LaMont boiler is
A)
0.5 to 10 MN/m2
B)
1 to 15 MN/m2
C)
2.5 to 15 MN/m2
D)
3.5 to 20 MN/m2
Answer & Solution
Answer: Option
D
45
By compounding the expansion of steam in two or more cylinders, the length of stroke
A)
Does not change
B)
Increases
C)
Decreases
D)
None of these
Answer & Solution
Answer: Option
C
46
A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called
A)
Blow off cock
B)
Stop valve
C)
Superheater
D)
None of these
Answer & Solution
Answer: Option
D
47
The function of a flywheel is
A)
To convert reciprocating motion of the piston into rotary motion
B)
To convert rotary motion of the crankshaft into to and fro motion of the valve rod
C)
To prevent fluctuation of speed
D)
To keep the engine speed uniform at all load conditions
Answer & Solution
Answer: Option
C
48
Ultimate analysis of fuel is determination of percentage of
A)
Carbon, hydrogen, nitrogen, sulphur, moisture
B)
Fixed carbon, ash, volatile matter, moisture
C)
Higher calorific value
D)
Lower calorific value
Answer & Solution
Answer: Option
A
49
Proximate analysis of fuel is determination of percentage of
A)
Carbon, hydrogen, nitrogen, sulphur, moisture
B)
Fixed carbon, ash, volatile matter, moisture
C)
Higher calorific value
D)
Lower calorific value
Answer & Solution
Answer: Option
B
50
A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be
A)
79 m/s
B)
188 m/s
C)
450 m/s
D)
900 m/s
Answer & Solution
Answer: Option
C
