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mmup mechanical questions 07

mmup mechanical questions

1-The molecular specific heat is  effected by :
A-Pressure
B-Temperature.
C-Pressure and temperature.
D-Number of nuclease  in the atom.

2-As per  NFPA 72 , how often the heat detector shall be inspected:
A-Daily.
B-Weekly
C-Monthly
D-Annually
3-Detector which usually detect heat and smoke is usually called
A-Hetosmoko detector
B-Combined heat and smoke detector .
C-xyz detector.
4-A Device which is used to control the air flow and also shut all the air from entire area is called:
A-Smoke damper.
B-Zone damper.
C-Heat damper
D-Dust damper. 
5- What is the main function of cooling tower?
1-Remove the heat from condenser by mean of water bath .
6-Saturated air is going through silica gel, what will happen to the air :
A-Wet bulb temperature will increase.
B-Wet bulb temperature will decrease.
C-it will undergo adiabatic saturation.
D-Dry bulb temperature will increase
E-Dry Bulb temperature will decrease

7-Activity is usually represented by :
A-Node.
B-Dot
C-Arrow
D-A and C
E-Non of the above.
8-Project initial investment is 2000000, the annual profit of the project is 150000, if 20% rate of return desired, after how many years the initial investment will be gained back:
A-1.1
B-2.2
C-5.5
D-8.8
9-As per NFP 72 , for lobby ceiling configuration  not exceeding 4.6 m height, in which distance A lobby smoke detector shall be located form the centerline of elevator door:

A- 3 m
B-6 m
C-3.2 m
D-6.4 m
 10- how often control valve shall be inspected:
A-Annually
B-half  Annually.
C-Monthly .
D-Daily
11-The pump operating point is defined by :
A-Applying the system head curve in to the pump performance curve.
B –Applying the system required flow rate in to pump performance curve  .

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