mmup mechanical questions 01

mmup mechanical questions

1- A material that makes deformation under sheer stress is :
a. Liquid
b. Gas
c. Solid
d. Fluid

Answer :d. Fluid


2- To determine the type of turbulent flow in a rough vessel, you require:
a. Reynolds number and relative roughness
b. Relative roughness
c. Mach number and Reynolds number
d. Mach number and relative roughness

Answer
3- If you have a cup of water at 70 degree Celsius and 1 Atmosphere, the liquid is:
a. Saturated liquid
b. Saturated vapor
c. Condensate liquid
d. None of the above
Answer : Non of the above

4- Zero velocity of a flow inside a vessel will be:
a. At the center
b. At the periphery
c. At the
d. At the
Answer

5- If you increase the water-cement ratio in the concrete:
a. Concrete will lose its specifications
b. Decrease the hardening time of concrete
c. Decrease the slump
d. Increase the slump

Answer
6- If you were awarded a project, you will start work:
a. One week before the approval of the authorities
b. After the approval of the authorities
c. One day before the approval of the authorities
Answer

7- A moving tyre on the ground will produce:
a. Potential energy
b. Kinetic energy in translation
c. Kinetic energy in rotation
d. Kinetic energy in translation and rotation.
Answer
8- Inspection of fire alarm system according to NFPA 72 will be a. Yearly
b. Quarterly
c. Daily
d. Weekly
Answer Quarterly

9- To select a pump you look at:
a. Maximum delivered pressure
b. Delivered flow
c. Delivered flow and pressure
d. Non of the above
Answer

10- Normally centrifugal pumps are primed, this is done to:
a. All the primer paint protect the pump from rust
b. Prevent the impeller from oxidation
c. Start the pump with low load.
d. Fill the impeller and the pipes in water to prevent air from cavitations

Answer d. Fill the impeller and the pipes in water to prevent air from cavitations

Examination 2 

1) NFPA ........for Car parking structure system (ans. 88A)
2) Inspection of heat detector according to NFPA (ans.
Quarterly)
3) Visual inspection of zone control valve as per NFPA
standard (ans. Semi yearly)
4) Testing of Fire alarm sound according to NFPA standard
(ans. Monthly)
5) Condensate water generated from which part of split unit
(ans. Evaporator)
6) Project definition (sorry the choices are not listed)
7) What is the system used to extract the air from the
basement (ans. Ventilation system)
8) What is the name of the upward force which is equal the
downward force and keep the object floating (ans.
Buoyancy force)
9) At which part of project the following take place: design
change, scheduling and planning (ans. Execution part)
10) Bolt size: M33x 3 means (ans. 33 related to bolt
diameter and 3 related to pitch to pitch distance)
11) Fire damper function is (sorry choices are not listed)
12) The function of the cooling tower is (sorry choices are not
listed)
13) Convert from CM to INCH (ans. Divide by 2.54)
14) Civil defense the main part to approve and review the
fire fighting systems

15) Water start boiling at (ans. Saturated liquid)

Examination4

1- The device installed between the air handler and the duct supply /Return is called:
- Smoke damper
- Splitter damper
- Can’t recall
- Can’t recall
Ans: Splitter damper
2- The visual inspection for the heat detectors as per NFPA 72 shall be conducted:
- Annually
- Semi-annually
- Quarterly
- Monthly
 Ans: Quarterly
3- For shafts serving four floors and more, the min fire rating shall be (as per NFPA):
- 1 hr
- 2 hrs
- Not required
- Can’t recall
Ans: 2 hrs

4- The testing of water flow devices as per NFPA72 shall be conducted:
Ans: Semi annually
5- The function of car bumper is:
- Absorb high speed impacts
- Low speed impacts
- Side impacts
- Can’t recall
Ans: Could be Low speed impact
6- The weld defect resulted from quick weld cooling is :
- undercut
- Porosity
- Can’t recall
- Deep penetrations
 Ans: Could be deep penetrations
7- Whenever the fluid flow prosperities don’t change with time, the flow called as
- Steady
- Uniform
- Unsteady
- Can’t recall

Ans: Steady
8- Isolated system is a system that:
- Mass is not entering or leaving the system while the energy can be transfer
- Neither mass nor the energy will enter or leaves the system
- Mass leave and enters the system while energy don’t
- Non of the above
Ans: Neither mass nor the energy enters or leaves the system
9- One of the below listed bonds is not considered as a strong bond:
- Van...”some thing can’t recall”
- Metallic bond
- Ionic bond
- Non of the above
Ans: ?????? I have chosen metallic
10- Definition of scope planning. (mutable choices)
11- The COP (coefficient of performance) for the vapor compression refrigerator is:
Ans: COP is the ratio of the heat removed from the cold reservoir to input work.
However, for heating, the COP is the ratio of the heat removed from the cold reservoir
plus the heat added to the hot reservoir to the input work

12- If your boss assigned a task for you to do and there are some parts of this tasks that you don’t
know how to deal with it, then what you shall do is:
- Tell your boss
- Take the task and do your best efforts to complete it
- Get expert engineers to help and consult them in this task.
- Can’t recall
Ans: Well I would say that –if you are really smart enough from the beginning then you
supposed to escape this task from the beginning trying to recommend your
neighborhood in office for it- accordingly and since you are not smart ... then it doesn’t
matter what your answer would be. !!!!
13- When you will obtain the maximum Calorific value for fuel .

Ans:
14- The pressure forces on a curved submersed object will be:

- Tangential to the object’s body
- Parallel
- Normal
- Can’t recall
Ans: Normal
15- The device to be installed in between fire rated walls is:
- Smoke damper.
- Volume control damper
- Fire damper
- Can’t recall

Ans: Fire damper
16- The delay time for a series of activities that would not affect if occurred the project timing
called:
- Total Slack
- Total Slag
- Critical Float
- Float pad
- Critical slag
Ans: Total Slack
17- One question about the parking ventilation (Ans: depend on the calculation)
18- Priming the pump means:
- To paint the pump casing with primer to avoid pump rusting
- Removing air form the pump casing and impeller.
- Remove air from the pump piping
- Can’t recall
Ans: Removing air from pump impeller.
19- What is the function of the barometer.
- Measure the pressure difference
- Measure the atmospheric pressure.
- Both
- None of the above
Ans: Measure atmospheric pressure
20- The most cause for machines component failure is:
- Buckling
- Creep
- Fatigue
- Can’t recall
Ans: I have chosen Buckling