MECHANICAL
ENGINEERING QUESTIONS for Engineer Registration:
Date: 11/12/13
1. How much time required for trained personnel to identify fire alarm, to evaluate and reset the
condition back to normal
a) 3 hour
b) 1 hour
c) 30 minutes
d) 3 minutes
ANS: d
2. In a power plant cycle, if efficiency of turbine ( = 80 %) and efficiency of generator(=90%), then
overall efficiency is
a) 170%
b) 100%
c) 72%
d) 10%
ANS: c
3. During a project phase, Change order (change request) means
a) Change in scope
b) Change in cost
c) Change in Time
d) Change in any work
ANS: d
4. During which of the below process, status reports, change request, forecasts created
a) Estimation
b) Planning
c) Initiation
d) execution
ANS: d
5. According to Brundtland Commission in 1987 report, the Three pillars of sustainability and
sustainability development are
a) Economic, environmental, cultural
b) Economic, environmental, social
c) Political, economic, environment
d) Cultural, political, social
ANS: b
6. Below change is least bothered during project phase
a) Scope
b) Time
c) People, performance
d) Cost
ANS: c ( because Scope, time and Time are triple constraints from project point of view.
Resource, performance, etc are least effective)
7. When boiling water in open pan, which is constant
a). temperature is constant
b). pressure is constant
c). volume is constant
d) All above
ANS: a. temperature is constant at boiling point.
8. If calorific value of fuel needs to be high,
a) Water vapor condensed initially when fuel burns
b) Water vapor condensed later when fuel burns
c) Water vapor is not formed while fuel burns
d) Water vapor is formed
ANS: c
9. If water vapor leaves at the eye of centrifugal pump, it is called
a) water hammer
b) cavitation
c) boiling
d) All the above
ANS: b
10. When three phases of fluid co‐exist at
a) Saturation point
b) Triple point
c) Critical point
d) Freezing point
ANS: b
11. COP (coefficient of performance) of refrigeration system defined as below
a) Compressor output to compressor input
b) Compressor input to compressor output
c) Cooling load output to compressor input
d) Compressor input to cooling load output
ANS: c
12. In a vapor compression refrigeration cycle, if super heating value increased and condensate
value decreased,
a) COP increase
b) COP decrease
ANS: a
13. Inspection Frequency of smoke detector in accordance with NFPA72
a) Weekly
b) Semi‐annually
c) Annually
d) Daily
ANS: b
14. classification of alarm system as per NFPA72
a) public and private
b) supervising station fire alarm system
c) protected premises fire alarm system
d) all the above
ANS:
15. Operating mode of alarm system
a) Public and private
b) Day and night
c) 12 hour and 24 hour
d) All the above
ANS:
16. Rate of deformation of fluid depends on
a) viscosity
b) density
c) specific weight
d) surface tension
ANS: a
17. heat transfer coefficient for forced convection
a) Is more as compared to natural convection
b) Is less as compare to natural convection
c) Is equal to natural convection
d) None of the above
ANS: a
18. Fans are provided on surface of heat transfer medium,
To increase more surface are exposed to heat transfer
(Answer is above, other options not remembered)
19. This is a wall separating two building act as barrier inside a building or vehicle, designed to limit
the spread of fire, heat and structural collapse
a) Fire wall
b) Retaining wall
c) Shelf wall
d) Impact wall
ANS: a
20. Phenomenon name called If smoke and gases leaves due to buoyancy effect
a) Stratification
b) Divergence
c) dissimilarity
ANS: a
21. In the HVAC system, air flow is controlled due to pressure difference and smoke is controlled by
a) Ventilator
b) Smoke control
ANS: b
22. Design/build means
a. The company is responsible for Design and construction
b. Construction starts prior to design
c. Other two options are irrelevant
ANS: a
