Online Mechanical Engineering Test - Steam Boilers and Engines Test

Instruction:

  • This is a FREE online test. Beware of scammers who ask for money to attend this test.
  • Total number of questions: 20.
  • Time allotted: 30 minutes.
  • Each question carries 1 mark; there are no negative marks.
  • DO NOT refresh the page.
  • All the best!

Marks : 2/20


Total number of questions
20
Number of answered questions
0
Number of unanswered questions
20
Test Review : View answers and explanation for this test.

1.
Fire tube boilers are
internally fired
externally fired
internally as well as externally fired
none of these
Your Answer: Option
(Not Answered)
Correct Answer: Option

2.
The fire tubes in a Scotch marine boiler are
horizontal
vertical
inclined
Your Answer: Option
(Not Answered)
Correct Answer: Option

3.
Which of the following boiler is best suited to meet the fluctuating demand of steam ?
Locomotive boiler
Lancashire boiler
Cornish boiler
Babcock and Wilcox boiler
Your Answer: Option
(Not Answered)
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4.
Which of the following statement is correct ?
Lancashire boiler is a fire tube boiler.
Fire tube boilers are internally fired.
Babcock and Wilcox boiler is a water tube boiler.
all of the above
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(Not Answered)
Correct Answer: Option

5.
A safety valve mainly used with locomotive and marine boilers is
lever safety valve
dead weight safety valve
high steam and low water safety valve
spring loaded safety valve
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(Not Answered)
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6.
Cut-off governing of steam engines is a method of controlling the engine output by varying
volume of intake steam
pressure of intake steam
temperature of intake steam
all of these
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(Not Answered)
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7.
A compound steam engine requires a heavier flywheel than simple steam engines.
True
False
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(Not Answered)
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8.
Cut-off governing as compared to throttle governing is
less efficient and less economical
less efficient and more economical
more efficient and less economical
more efficient and more economical
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(Not Answered)
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9.
Blow off cock in a boiler is used to
control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required
empty the boiler when required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler
put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit
increase the temperature of saturated steam without raising its pressure
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(Not Answered)
Correct Answer: Option

10.
A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as
blow off cock
fusible plug
superheater
stop valve
Your Answer: Option
(Not Answered)
Correct Answer: Option

11.
The amount of water evaporated or steam produced in kg per kg of fuel burnt is termed as evaporative capacity of a boiler.
Agree
Disagree
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(Not Answered)
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12.
The function of an eccentric is to provide __________ motion to the slide valve.
reciprocating
rotary
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(Not Answered)
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13.
The clearance in the engine cylinder
increases the mean effective pressure
increases the workdone
decreases the efficiency of the engine
all of these
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(Not Answered)
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14.
When the circulation of water, in a boiler, is by convection currents which are set up during the heating of water, then the boiler is known as
internally fired boiler
externally fired boiler
natural circulation boiler
forced circulation boiler
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(Not Answered)
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15.
Which of the following are boiler accessories ?
economiser
superheater
both (a) and (b)
none of these
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16.
The amount of water evaporated in kg per kg of fuel burnt is called
evaporative capacity of a boiler
equivalent evaporation from and at 100° C
boiler efficiency
none of these
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(Not Answered)
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17.
The draught (in mm of water), for maximum discharge of flue gases through the chimney, is given by (where H = Height ot the chimney in metres, and T1 = Absolute temperature of air outside the chimney in K)
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(Not Answered)
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18.
Water tube boilers are
internally fired
externally fired
internally as well as externally fired
none of these
Your Answer: Option
(Not Answered)
Correct Answer: Option

19.
The function of a piston in a steam engine is
to guide motion of the piston rod and to prevent it from bending
to transfer motion from the piston to the cross-head
to convert heat energy of the steam into mechanical work id) to exhaust steam from the cylinder at proper moment
Your Answer: Option
(Not Answered)
Correct Answer: Option

20.
In a Woolf type compound engine, the high pressure and low pressure cylinders
have common piston rod
are set at 90°
have separate piston rod
are set in V - arrangement
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(Not Answered)
Correct Answer: Option

*** END OF THE TEST ***
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