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WorksheetsNo.10 (MESL)
Total questions: 131
Worksheet time: 1hrs 6mins
Under the provisions of the PSME Code 1993, what is the color symbol for air piping?
Silver gray
Green
Light blue
Red
Which of the following is the basis for Bernoulli’s law for fluid flow?
Fourier’s Law
Continuity equation
Principle of mass conservation
Principle of energy conservation
Which of the following is not a unit of work?
Dyne
Work
Watt – second
Newton – meter
What condition exists in an adiabatic throttling process?
Variable enthalpy
Constant enthalpy
Constant entropy
Volume constant
Specific gravity of a substance is the ratio of its density to the density of
Mercury
Water
Gas
Air
Instrument used in determining specific gravity of any substance
Hydrometer
Westphal balance
Psychrometer
All of the above
The weight of the column of air above the earth surface
Aerostatic pressure
Air pressure
Atmospheric pressure
Wind pressure
Gas being heated at constant volume is undergoing the process of
Isentropic
Adiabatic
Isobaric
Isometric
A process that has no heat transfer
Reversible
Adiabatic
Polytropic
Isometric
Heat normally flowing from a high temperature body to a low temperature body wherein it is impossible to convert heat without other effects is
1st law of thermodynamics
2nd law of thermodynamics
3rd law of thermodynamics
Zeroth law
Form of energy associated with kinetic energy of the random motion of large number of molecules
Heat
Heat of fusion
Kinetic energy
Enthalpy
At what temperatures are the two temperatures scales, degrees Celsius and Fahrenheit equal?
– 20C
– 40C
– 30C
40C
Second law of thermodynamics states that
Entropy cannot be neither created nor destroyed
Heat energy cannot be completely transformed into work
There is no tendency towards spontaneous change
Mass is indestructible
Turbojet engine thrust is produced by
Trust reaction of the turbine blading
Additional weight of the injected fuel
Ram effect of the intake fuel
Acceleration of the gasses through the engine
A process in which water vapor is added to the air stream by adiabatic evaporation
Evaporative cooling
Sensible cooling
Humidifying
None of the above
Each miniature boiler shall be provided with a blow off connection not less than 12.7 mm iron size in direct connection with the
Lowest water space
Side of the lowest water space
5mm above the west water space
None of the above
Where ground water or surface water are used for feed water, water hardness of 0 – 10 ppm shall be considered and alkalinity of
ph 10 to ph 11
ph 9 to ph 10
ph 8 to ph 9
ph 8 to ph 10
The ratio of the weight of the water vapor mixed with a Kg of dry air to the weight of saturated vapor at the same temperature mixed with a Kg of dry air
Relative humidity
Humidity ratio
Saturation ratio
Specific density
If the initial volume of saturated steam is expanded isothermally to twice the initial volume, the pressure
Increases
Decreases
Constant
Specific Density
Latent heat of fusion required to ice to liquids
970.3 BTU/lbm
2257 KJ/kgm
335 KJ/kgm
2442 KJ/kgm
Ratio between average demand and the maximum demand
Load factor
Demand factor
Capacity factor
Use factor
Absolute viscosity is essentially independent of pressure and is primarily dependent on
Density
Velocity
Specific gravity
Temperature
Reynolds number may be calculate for
Diameter, velocity and surface tension
Diameter, density and absolute viscosity
Diameter, velocity and absolute viscosity
Characteristic length, mass flow rate per unit area and absolute viscosity
Mechanically and electrically operated brakes shall be inspected
Every month
Periodically
As often as necessary
Every time there is complaint
A type of compressor which is often used for supercharging diesel engines
Roots blower
Rotative compressor
Centrifugal compressor
Axial compressor
The sum of the pressure head, elevation head and the velocity head remains constant, is known as
Torricelli’s theorem
Charles law
Archimedes principle
Bernoulli’s principle
Entropy is the measure of
Change in enthalpy of a system
Randomness and disorder
Internal energy of a gas
Heat capacity of a substance
Power output of the engine is increased through
Supercharging
Turbo – charging
Scavenging
All of the above
Galvanized iron is a term referring to iron coated with
Magnesium
Zinc
Tin
Aluminum
A closed vessel intended for use in heating water or for application of heat to generate steam or other vapor to be used externally to itself is called
Steam generator
Heater
Unfired pressure vessel
Regenerator
Formation of bubbles in a low pressure area in centrifugal pump and later their sudden collapse is called
Erosion
Corrosion
Cavitation
Explosion
The equilibrium temperature that a regular thermometer measures if exposed to atmospheric air is
Dew point
Wet bulb
Dry bulb
Approach
Type of cooler extensively used for medium and large size diesel engines
Shell and tube cooler
Plate cooler
Disc cooler
Radiator cooler
In energy transformation process in which the resultant condition lacks the driving potential needed to reverse the process, the measures of this loss is expressed as
Enthalpy increase of the system
Entropy increase of the system
Entropy decrease of the system
Specific heat ratio of the system
Heat transmission carried by the movement of heated fluids away from a hot body as in the heating of water by a hot surface
Conduction
Convection
Radiation
Absorption
Use as a guide for selecting the most efficient centrifugal pump
Type of impeller
Overall efficiency
Specific speed
Peripheral coefficient
Source of power which acts as an excellent prime mover for the generation with horsepower ranging from 100 to 5000
Steam engine
Gas turbine
Steam turbine
Diesel engine
When vane control is used for mechanical draft fans and where a wide load range is required, it is
Single speed drive motor
Two speed drive motor
Three speed drive motor
Four speed drive motor
In the flow process, neglecting KE and PE changes, integral of –Vdp represents
Flow energy
Enthalpy change
Heat transfer
Shaft work
A system or refrigeration which uses heat energy to change the condition required in the refrigeration cycle
Vapor compression
Steam jet refrigeration
Absorption refrigeration
Ice refrigeration
Ph value for alkalinity requires
8 or more
2 to 4
4 to 5.5
5.5 to 7
Standard height of workshop ceiling
3 meters
4 meters
5 meters
6 meters
The ratio of maximum load to the rated plant capacity
Load factor
Capacity factor
Demand factor
Use factor
Air is compressed in a cylinder, the work is
Zero
Indeterminate
Positive
Negative
Amount of heat required to raise the temperature of one gram of that substance in one degree centigrade
BTU
CHU
Calorie
Joule
Amount of heat required to change the temperature of a given unit mass of a substance in one degree
Sensible heat
Latent heat
Specific heat
Expensive heat
The National Association of Mechanical Engineers accredited by the Professional Regulation Commission
PAMEE
PIMEE
PSME
Board of Mechanical Engineering
Under the code of ethics, the mechanical engineer shall be completely above suspicion or reproach in relation with his clients and employee
True
False
Neither true or false
None of the above
Under the code of ethics, the mechanical engineer should recognized ________ as one of the major resources of our country
Machine
People
Labor
Technology
Minimum grade that maybe required in the maintenance of a 200 kW Diesel Power Plant:
RME
CPM
PME
MPE
Minimum grade of mechanical engineer required in the operation of a 500 kW Diesel Power Plant:
PME
RME
MPE
CPM
The power consumed by an AC machine is equal to ________ where E is the voltage I is the current
sin theta
cos theta
EI cos theta
EI sin theta
The ratio of power output in watts to the product of volts and amperes is called
Demand factor
Power factor
Generator efficiency
Capacity factor
A concrete mixture of 1:2:4 means a mixture of
1 measure cement; 2 measures of sand; 4 measures gravel
1 measure sand; 2 measures cement; 4 measures gravel
1 measure Portland cement; 2 measures gravel; 4 measures sand
1 measure gravel; 2 measures sand; 4 measure cement
The heat transfer process in a cooling tower consist of a transfer of heat from water to
Ice
Vapor
Saturated air
Unsaturated air
The measure of the fluid resistance when acted upon by an external force
Density
Viscosity
Flash point
Pour point
The difference between the sum of the absolute dynamic head at the outlet of the pump and the sum of the absolute dynamic head at the inlet connected to the pump centerline is
Net Positive Suction Head
Developed head
Total dynamic head
Total suction head
Large pumps usually are driven by 3 – phase induction motors. The synchronous speed of such a motor is the speed of the rotating field
n = (120 x frequency)/no. of poles
n = (120 x frequency)/power factor
n = (120 x frequency)/(2 x no. of poles)
n = (50 x 120 x frequency)/no. of poles
Best safety practices in industrial plant.
To train delivery personnel
To maintain fire brigade
To provide machines with appropriate guard
To provide alert security guards
A type of boiler which incorporates furnace water cooling in the circulatory system is known as
Integral furnace boiler
Integral crate boiler
Integral co – generation boiler
Integral box boiler
Boiling point of Freon 12
-29.6 oC
-40 oC
-48 oC
-52 oC
Transmission of heat from a body to a cold body by electromagnetic waves
Conduction
Convection
Radiation
Absorption
An increase in enthalpy of a substance when it undergoes some phase change at a constant pressure and temperature
Heat of crystallization
Heat of transformation
Heat of fusion
Heat vaporization
The age limit of a horizontal return tubular flue or cylinder boiler having a longitudinal lap joint and operating at a pressure in excess of 345 kPa shall be
18 years
35 years
30 years
20 years
Air used for comfort cooling shall maintain a movement of
8 to 10 mm/min
10 to 10000 mm/min
7850 to 9000 mm/min
4570 to 7620 mm/min
The loss of weight of a body submerged in a fluid is
Independent of the volume of the body
Proportional to the depth of submergence
Proportional to the weight of the body
Equal to the weight of the body displaced
The ratio of the maximum demands of the separate parts of a system and the maximum demand of the entire system:
Diversity factor
Power factor
Load factor
Use factor
The only country that recognizes mechanical engineering license of Filipinos is issued by the Professional Regulation Commission and allowed to use the license in their country
Thailand
Taiwan
Japan
None of the above
Before a Registered Mechanical Engineer be allowed to take the Professional Mechanical Engineer licensure examination, he must have _________ years of practice as a Registered Mechanical Engineer
3
4
5
More than 6
Responsible in the preparation of plans, valuation, technical reports, estimates or specifications for any mechanical works, project or plant
Registered Mechanical Engineer
Mechanical Plant Engineer
Professional Mechanical Engineer
Unlicensed Mechanical Engineer but with Masteral
The _________ may remove any member of the board of mechanical engineering for continued neglect of duty or incompetence or for dishonorable misconduct
PSME President
PIMEE President
Professional Regulation Commission
Senate President
_________ refuses to issue certificates to any person convicted by court of any criminal offense involving moral turpitude, dishonorable conduct or to any person of unsound mind
PSME
Public Works
Board of Mechanical Engineering
Professional Regulation Commission
Steam engines, internal combustion engines, boilers, turbines, crushers, mills, pumps are classified as
Mechanical plant
Mechanical works
Mechanical equipment, machinery or procedure
Machines
Steam generators must be inspected by authorized government representatives who shall conduct a hydrostatic test of _______ % of its stipulated steam pressure
150
100
180
130
Upon completion of boiler installations, this must be inspected by
Licensed Mechanical Engineer
Municipal Engineer
Professional Mechanical Engineer
Boiler Supplier
The lowest permissible water level in boilers shall be ________ of the height of the shell except where the boiler is equipped with internal surface in which it shall not be less than __________ of the tube length above the top of the surface
1/2 : 1/2
1/3 : 1/3
1/4 : 3/4
1/4 : 1/4
The ratio of the average load to the plant capacity times the number of hours in operation
Demand factor
Load factor
Capacity factor
Use factor
Speed of a turbine will run and develop a 1 brake horsepower from a head of 1 foot
Runaway speed
Peripheral speed
Specific speed
Rim speed
Duration of the actual service to the total duration of the period of time considered
Utilization factor
Use factor
Operation factor
Load factor
Ratio of the maximum demand of the system over the rated capacity of the system
Operation factor
Use factor
Utilization factor
Load factor
Power intended to be always available even under emergency conditions
Prime power
Firm power
Primary power
Dump power
The temperature at which oil gives off vapor that burns continuously when ignited
Fire point
Pour point
Flash point
Cloud point
Ignition quality rating of diesel which is the percent of Cetane in standard fuel
Octane no.
Conradson no.
Cetane no.
Aniline point
Instrument indicating the percentages of carbon dioxide in the flue gases
Calorimeter
Ranarex indicator
Orsat analyzer
None of the above
Carbon dioxide in the flue gases
Calorimeter
Ranarex indicator
Orsat analyzer
None of the above
Fixed speed of a hydraulic turbine when it discharges water under wide open gates with no load
Specific speed
Runaway speed
Wheel speed
Peripheral speed
Temperature at which oil will no longer pour freely or the temperature at which oil will solidify
Dropping point
Pour point
Cloud point
Fire point
Portion of the capacity of the hydraulic power plant available at all times when energy is needed
Secondary power
Primary power
Dump power
Firm power
Heat required to raise the temperature of one pound of that substance in one degree centigrade
BTU
Centigrade heat unit
Joule
Calorie
If the volume of a given mass of a gas varies inversely as its absolute pressure, provided the temperature remains constant
Charles law
Avogadro’s law
Boyles law
Lenz law
The total pressure of mixture is the sum of their partial pressures
Avogadro’s law
Charles law
Daltons law
Zeroth law
Heat required to raise the temperature of one kg of that substance in one degree centigrade
Sensible heat
Joule
Calorie
Specific heat
Amount of heat liberated by the complete combustion or burning of a unit substance of a unit – weight or volume of a fuel
Specific heat
Latent heat
Heating value
Sensible heat
Change of internal energy is a function of temperature change only
Boyles law
Joules law
Charles law
Bernoulli’s principle
Equal volumes of all ideal gases at a particular pressure and temperature contain same number of molecules
Joules law
Avogadro’s law
Archimedes principle
Lenz law
When everything which is in disorder eventually goes to disorder
First law of Thermodynamics
Second Law of Thermodynamics
Conservation of mass
Newtonians Mechanic
Temperature at which molecular motion ceases according to kinetic theory of heat
Boiling point
Furnace temperature
Absolute temperature
Flash point
When two bodies are in thermal equilibrium with a third body, they are in thermal equilibrium with each other and hence are at the same temperature
Zeroth law
Lenz law
Boyles law
Joules law
The volume of a given mass of gas varies directly as its absolute temperature provided pressure remains constant
Lenz law
Charles law
2nd Law of Thermodynamics
1st Law of Thermodynamics
Instrument used to measure small difference in pressure or draft
Bourdon
Manometer
Pitot tube
Anemometer
Quantity of heat required to change the state of a substance, from solid to liquid without change in temperature
Latent heat of evaporation
Latent heat of fusion
Latent heat of sublimation
Latent heat of air and water vapor
The percentage by weight of the carboneous residue remaining after destructive distillation
Aniline point
Octane no.
Conradson no.
Cetane no.
Temperature at which oil gives off vapor that burns temporarily when ignited
Pour point
Boiling point
Flash point
Critical point
Reserve generating capacity available for service but not in service operation
Reserve equipment
Cold reserve
Hot reserve
Spinning reserve
Reserve generating capacity in operation but not in service
Hot reserve
Cold reserve
Spinning reserve
None of the above
Latent heat of water vapor in the combustion products is in the liquid form
Latent heat value
Higher heating value
Lower heating value
No answer
Color of electrical pipes
Red
Green
Light orange
Ultra violet
Distance from top of the boiler ceiling of the plant for standard application
2000 mm
3000 mm
4000 mm
5000 mm
Color firefighting material pipes
Safety red
Light orange
Yellow orche
Blue
Color of pipes for gases in either gaseous or liquefied form
Yellow ohe
Light blue
Silver gray
Green
Water vapor content in the products of combustion is in the vapor state
Higher heating value
Gross calorific value
Specific heat value
Lower heating value
A device that sits on top of the electric locomotive (LRT) and picks up electricity from overhead wires to run the train
Hydrograph
Absorption dynamometer
Chassis dynamometer
Overhead dynamometer
A reserve generating capacity that is connected to the bus and ready to take load
Hot reserve
Cold reserve
Effective reserve
Spinning reserve
A type of manometer used for measuring volume of liquids in tanks
Pnuemercator
Breeching
Venturi tube
Differential type
The actual amount passing into and out of the treasury of financial venture
Cash flow
Capital
Book value
Salvage value
Things that have value
Property
Assets
Investment
Real estate
A term used to describe payment of an employee wherein an employee is called back to work after his regular days work
Call back pay
Back wages
Call in pay
Portal to portal pay
Manner of liquidating a debt by installment usually at equal intervals of time
Investments
Depreciation
Amortization
Bonding
Cost that does not change with the changes in volume of outputs
Amortization
Fixed costs
Discount
Book cost
Funds that are required to make the enterprise or project a going concern
Banking
Accumulated amount
Working capital
Principal
Instead of the profits being paid out to the stockholders or owners as dividends, they are retained in the business and used to finance expansion
Flow back
Bonds
Deposits
Retained earnings
The reduction in value and marketability due to competition from newest products
Obsolescence
Fixed cost
Depreciated cost
Indirect cost
Form of summary of assets, liabilities and net worth
Production
Breakeven point
Balance sheet
Balance method
An index of short term paying ability
Profit margin ratio
Current ratio
Acid test ratio
Receivable turn over
The worth of property which is equal to the original cost less depreciation
Earning value
Face value
Scrap value
Book value
Ratio of annual revenues to the annual expenses
Benefit ratio
Benefit cost ratio
Rate of return
Income ratio
These are the products of services that are required to support human life and activities that will be purchased in somewhat the same quantity even though the price varies considerably
Luxuries
Utilities
Necessities
Producers goods and services
The length of time during which the property maybe operated at a profit
Length of time
Physical life
Life
Economic life
In occurs in unique product of services is available only from a single supplier and entry of all possible suppliers prevented
Competition
Monopoly
Profitability
Inventory
The difference between the book value and the actual lower resale value
Sunk cost
Salvage value
Resale value
Fixed cost
Grand total of the assets and operational capability of a corporation
Earning value
Money market
Investment
Authorized capital
