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Question 1
If a specification is in conflict with a note on the drawings, which statement is correct?
Details take precedence over notes.
Details take precedence over drawings.
Specifications take precedence over drawings.
Drawing notes take Precedence over
specifications.
Correct Answer : c
Selected Answer : b
Explanation : In general industry practice, specifications typically take precedence over drawings and notes.
Therefore, the correct statement would be: Specifications take precedence over drawings. Specifications are
detailed written instructions that outline the materials, workmanship, and other requirements for a project. If there
is a conflict between the specifications and the drawings or notes, the specifications are generally considered to be
the controlling document. This ensures consistency and clarity in the execution of the project.
Question 2
A cylindrical pressure vessel with hemispherical end caps is unrestrained. The diameter is 1 m, the wall
thickness is 1 cm, and the internal gage pressure is 3 MPa. If the tensile yield strength Syt is 450 MPa and the
von Mises failure criterion is used, then the factor of safety (SJ 1’/neffective) lS most nearly:
1.5
1.7
3.0
3.5
Correct Answer : d
Selected Answer : c
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Explanation :
Question 3
An oil cooler in a high performance engine has an outside surface area 0.12 m^2 and a surface temperature
of 65 degree Celsius. At any intermediate time air moves over the surface of the cooler at a temperature of 30
degree Celsius and gives rise to a surface coefficient equal to 45.4 W/ m^2K. Find out the heat transfer rate?
238.43 W
190.68 W
543.67 W
675.98 W
Correct Answer : b
Selected Answer : b
Explanation :
Question 4
How often shall a visual inspection be done on audible alarm system as per NFPA 72 ?
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Annually
Semi-Annually
Monthly
Weekly
Correct Answer : b
Selected Answer : d
Explanation : According to NFPA 72, a visual inspection of an audible alarm system should be conducted semiannually. The National Fire Protection Association (NFPA) recommends regular visual inspections of audible alarm
systems to ensure proper functioning and identify any issues or malfunctions. According to NFPA 72, visual
inspections of fire alarm components can be done weekly, monthly, semiannually, or annually. However, these
schedules can change depending on the local jurisdiction and the authority having jurisdiction (AHJ).
Question 5
Which of the following must not be a characteristic of a quality system?
It must be well-understood
Products or services actually do satisfy customer
expectations
Emphasis on problem prevention
It must be ineffective
Correct Answer : d
Selected Answer : a
Explanation : Ineffectiveness is not a characteristic of a quality system. A quality system should be well-understood,
effective, and emphasize problem prevention. It should also ensure that products or services meet customer
expectations. A quality system, or quality management system (QMS), is a structure for managing the quality of a
manufacturer's output. It aims to improve core processes to achieve customer satisfaction at the lowest cost to the
organization. Some characteristics of a quality system include: Quality policy Quality manual Document and
records control and management Processes and procedures Data management and analysis Some key
components of quality control management include: Quality planning, Quality control, Quality assurance, Quality
improvement. Some quality management principles include: Customer focus Leadership Engagement of people
Process approach Improvement Evidence-based decision making Relationship management
Question 6
The efficiency of a Reversed Carnot engine is 65%. If the direction of cycle is reversed, then the value of COP of
reversed Carnot cycle will be:
0.44
0.54
0.64
0.74
Correct Answer : b
Selected Answer : d
Explanation :
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Question 7
The absolute zero pressure can be attained at a temperature of ?
0°C
-273°C
273 K
None of these
Correct Answer : b
Selected Answer : b
Explanation : The absolute zero pressure can be attained at a temperature of: b.) -273°C This is also equivalent to 0
Kelvin (K). Absolute zero is the lowest possible temperature where nothing could be colder, and at this temperature,
the pressure of a perfect gas is zero.
Question 8
i) Strain is a fundamental behavior of a material. ii) Strain does not have a unit.
Both i and ii are true and ii is the correct
explanation of i
Both i and ii ate true but ii is not the correct
explanation of i
i is true but ii is false
ii is true but i is false
Correct Answer : b
Selected Answer : c
Explanation : Explanation: Strain is measured in a laboratory that is why it is called a fundamental quantity. Also
since it is the ratio of the dimension of length to the dimension of length, it is dimensionless.
Question 9
The horizontal component of buoyant force is:
Negligible
Same as buoyant force
Zero
None of the above
Correct Answer : c
Selected Answer : d
Explanation : The horizontal component of buoyant force is zero. Buoyant force is caused by a difference in
pressure. In a static fluid, the net horizontal force is zero because the projected area in the vertical plane is
subjected to equal pressure from both sides of the object. Buoyant force is zero if a body is completely submerged
in a fluid.
Question 10
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The mixing boxes of a double-duct constant-volume air-handling system consist of hot air and cold air
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dampers linked together and operated by a common actuator. Which of the following best describes the
action of the dampers as cooling demand is reduced?
Each damper acts independently to give
necessary mixed air temperature.
The hot damper and the cold damper modulate
so that hot airflow is inversely proportional to
coldAnswer
airflow.: c
Correct
The hot damper and the cold damper modulate
so that hot airflow is proportional to cold airflow.
The cold damper is modulated from maximum
to a preset minimum, and the hot damper is then
modulated to continue control sequence.
Selected Answer : a
Explanation : The dampers in the constant-volume mixing boxes are linked and cannot act independently.
Therefore, (A) and (D) are not possible. (B) is not correct because it states that the hot damper is proportional to
the cold damper. (C) is Correct because hot airflow is increased as cold air flow is decreased, an inverse
relationship. THE CORRECT ANSWER IS: (C)
Question 11
A lump of steel of mass 50 kg is at a temperature of 2270C. What will be the maximum possible work (in kJ)
that can be obtained from it, when the ambient temperature is 270C? Given specific heat of steel =0.5 kJ/kgK.
900.18
2050.48
23.46
1168.45
Correct Answer : d
Selected Answer : c
Explanation :
Question 12
A bolt is designed with a large factor of safety, On the Basis Of _____________ ?
Direct tensile stress
Direct compressive stress
Direct bending stress
Direct shear stress
Correct Answer : a
Selected Answer : d
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Explanation :
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Question 13
You can change the duration of the project by increasing more resources and spending more money. This
process is known as crashing. Is it always possible to crash the activities of a project
True
False
Correct Answer : b
Selected Answer : a
Explanation : While crashing is a project management technique that involves adding more resources to certain
project activities to reduce their duration and accelerate the project schedule, it's not always possible to crash
activities. There may be limitations, such as resource availability, budget constraints, or technological restrictions,
that prevent the straightforward application of crashing to all activities. Additionally, some activities may have
inherent dependencies and cannot be significantly shortened without compromising the project's quality or
integrity. So, Option B is the Right Answer,
Question 14
The shear stress at a point in a liquid is found to be 0.03 N/m2. The velocity gradient at the point is 0.15 s-1.
What will be it’s viscosity (in Poise)?
20
2
0.5
0.2
Correct Answer : b
Selected Answer : d
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Explanation :
Question 15
The value of Poisson's ratio for steel is between
0.01 to 0.1
0.23 to 0.27
0.25 to 0.33
0.4 to 0.6
Correct Answer : c
Selected Answer : b
Explanation :
Question 16
A range hood in a commercial kitchen must be designed and installed in accordance with which of the
following codes?
ASME
Ashgal
FM
NFPA
Correct Answer : d
Selected Answer : a
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Explanation : The National Fire Protection Association (NFPA) provides codes and standards related to fire safety,
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including NFPA 96, which specifically addresses ventilation control and fire protection of commercial cooking
operations, including requirements for the installation and maintenance of commercial kitchen range hoods.
Question 17
Covert from CM to INCH divided by
2.54
25.4
0.25
5.24
Correct Answer : a
Selected Answer : c
Explanation : To convert cm to inches or inches to cm, the relationship between inch and cm is that one inch is
exactly equal to 2.54 cms in the metric system. 1” = 2.54 cm Therefore, 1 cm = 1/2.54 inches Therefore, to convert cm
to inches, we need to divide the value in centimeters by 2.54. For a 1 cm length unit, the corresponding length in
inches is equal to 1 cm = 0.393701 inches
Question 18
A power cycle continuously converts ____ into ____
heat, heat
work, heat
heat, work
work, work
Correct Answer : c
Selected Answer : b
Explanation : Here heat is the energy released by burning of fuel and work is done as shaft work. A cycle which
continuously converts heat into work is known as a power cycle. In a power cycle, the working fluid repeatedly
performs a succession of processes. If the working fluid is alternately vaporized and condensed, then the cycle is
called vapour power cycle.
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Question 19
Two fluids 1 and 2 have mass densities of p1 and p2 respectively. If p1 > p2, which one of the following
expressions will represent the relation between their specific volumes v1 and v2?
v1 > v2
v1 < v2
v1 = v2
Cannot be determined due to insufficient
information.
Correct Answer : b
Selected Answer : c
Explanation : Explanation: Specific volume(v) is defined as the volume(V ) per unit mass(m). v = v⁄m = 1 / m⁄v = 1⁄p
where p is the mass density. Thus, if p1 > p2, the relation between the specific volumes v1 and v2 will be represented
by v1 < v2.
Question 20
A project has a 60% chance of a 100,000 QAR profit and a 40 percent of a 100,000 QAR loss. The Expected
Monetary Value for the project is:
100,000 QAR Profit
60,000 QAR Loss
20,000 QAR Profit
40,000 QAR Loss
Correct Answer : c
Selected Answer : b
Explanation : Expected Monitory Value (EMV) is computed by EMV = Probability × Impact. Compute both positive
and negative values and then add them: 0.6 × 100,000 QAR = 60,000 QAR 0.4 × 100,000 QAR = 40,000 QAR EMV =
60,000 QAR - 40,000 QAR = 20,000 QAR Profit
Question 21
For the stability of a floating body, under the influence of gravity alone, which of the following is TRUE?
Metacentre should be below centre of gravity
Metacentre should be above centre of gravity
Metacentre and centre of gravity must lie on the
same horizontal line
Metacentre and centre of gravity must lie on the
same vertical line
Correct Answer : b
Selected Answer : c
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Explanation :
Question 22
The ratio of inertia force to viscous force is known as
Gasthof number
Reynolds number
Fourier number
Nusselt number
Correct Answer : b
Selected Answer : a
Explanation : HINT: Re=ρvd/μ(Reynolds number is indicative of the relative importance of inertial and viscous effects
in a fluid motion.) The ratio of inertia force to viscous force is known as the Reynolds number. It is a dimensionless
number used to classify fluid systems where viscosity is important in controlling the flow pattern or velocities of a
fluid. The Reynolds number is used to determine the type of flow, either laminar or turbulent. Viscous force tends to
keep layers moving smoothly one over the other, while inertia forces tend to move particles away from the layer.
When viscous forces are high enough to smooth out any disturbance, laminar flow occurs in pipes.
Question 23
Poisson's ratio is a term that arises in:
Heat Transfer
HVAC
Mechanical Behavior
Vapour Power Cycles
Correct Answer : c
Selected Answer : d
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Explanation : Poisson's ratio is a measure of how a material deforms when acted upon by a force. It is applied in
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situations where the mechanical behavior of a machinery component is important. THE CORRECT ANSWER IS: (C)
Question 24
Five dimensions that must be managed on a project
Constraint, Quality, Cost, Schedule, Staff
Features, Quality, Cost, Schedule, Staff
Features, priority, Cost, Schedule, Staff
Features, Quality, Cost, Schedule, customer
Correct Answer : b
Selected Answer : d
Explanation : The correct option for the five dimensions that must be managed on a project is: Features, Quality,
Cost, Schedule, Staff .These dimensions encompass various aspects of project management, including project
scope (features), quality standards, budget (cost), timeline (schedule), and human resources (staff). These five
dimensions are also known as the "project management pentagon" or the "five project management Ps". Each
dimension can be a project constraint, a driver, or a degree of freedom. Other dimensions of project management
include: Budgets, Status reports, Scope, Resource allocation, Controlling, Planning.
Question 25
Which combination of the following statements about steady incompressible forced vortex flow is correct ? P.
Shear stress is zero at all points in the flow. Q. Vorticity is zero at all points in the flow. R. Velocity is directly
proportional to the radius from the centre of the vortex. S. Total mechanical energy per unit mass is constant
in in the entire flow.
P and Q
R and S
P and R
P and S
Correct Answer : c
Selected Answer : a
Explanation :
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Question 26
After which process during the VCR cycle, the highest temperature is achieved?
Evaporation
Expansion
Condensation
Compression
Correct Answer : d
Selected Answer : c
Explanation : Explanation:- The compression process is used to increase the pressure. So, according to GayLussac’s law, P ∝ T As the highest pressure obtained after compression, the temperature obtained is also the
highest. The highest temperature in a vapor compression refrigeration cycle occurs after the compression process.
During the compression process, the refrigerant vapor is compressed, which increases its temperature and
pressure. The highest pressure obtained after compression also results in the highest temperature. The vapor
compression refrigeration cycle consists of four main processes: Compression, Condensation, Expansion,
Evaporation. The lowest temperature during the cycle is obtained in the evaporator, which comes after the
expansion process.
Question 27
A rectangular block of size 400mm x 50mm x 50mm is subjected to a shear stress of 500kg/cm^2. If the
modulus of rigidity of the material is 1×10^6 kg/cm^2, the strain energy will be
125 kg-cm
1000 kg-cm
500 kg-cm
100 kg-cm
Correct Answer : a
Selected Answer : d
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Explanation : Strain energy stored = τ^2V/2G = 500^2/2×10^6 x 40x5x5 = 125 kg-cm.
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