9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Question 1 1 / 1 pts Methyl chloride shall not be in contact with Zinc Magnesium Correct! All of these Aluminum Question 2 1 / 1 pts Is use to subcooled the refrigerant from the condenser Condenser subcooler Desuperheating coils Liquid receiver Correct! Liquid subcooler https://canvas.instructure.com/courses/3461249/quizzes/9025335 1/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Question 3 1 / 1 pts During hydrostatic test, the safety valves should be Closed Partially closed Correct! Removed Open Question 4 1 / 1 pts Seats and discs shall be limited in distortion, by pressure or other cause, to set pressure change of not more than ____ in a span of five years. Correct! 5% 10% 50% 1% https://canvas.instructure.com/courses/3461249/quizzes/9025335 2/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Question 5 1 / 1 pts Which of the following is NOT a part of high pressure side in refrigeration system? Condenser Correct! Suction line Liquid line Compressor Question 6 1 / 1 pts Are suitable for use in ammonia system Correct! Aluminum and its alloy Plastic Copper Cast iron Question 7 https://canvas.instructure.com/courses/3461249/quizzes/9025335 1 / 1 pts 3/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Modern way of detecting air compressor leak is by using Air leak detector Correct! Acoustic leak detector Soup and water Ammonia leak detector Question 8 1 / 1 pts Shall not be in contact with any halogenated refrigerants Zinc All of these Aluminum Correct! Magnesium Question 9 1 / 1 pts Foundation bolts of specified size should be used and surrounded by a pipe sleeve with an inside diameter of at least https://canvas.instructure.com/courses/3461249/quizzes/9025335 4/43 9/20/21, 4:31 PM Correct! PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 3 times the diameter of anchor bolt 2 times the diameter of anchor bolt 3 times the diameter of engine bolt 2 times the diameter of engine bolt Question 10 1 / 1 pts Two most common gases employed in Stirling and Ericsson cycles are. Correct! Hydrogen and helium Oxygen and helium Nitrogen and helium Air and helium Question 11 1 / 1 pts If the cut-off ratio of diesel cycle increases, the cycle efficiency will https://canvas.instructure.com/courses/3461249/quizzes/9025335 5/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Remains the same Increase None of these Correct! Decrease Question 12 1 / 1 pts The fuel used in a power plant that is used during peak periods. Correct! Liquid Gas None of these Solid Question 13 1 / 1 pts In most common design of gas turbine, the pressure ratio ranges from 15 to 20 https://canvas.instructure.com/courses/3461249/quizzes/9025335 6/43 9/20/21, 4:31 PM Correct! PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 11 to 16 10 to 12 12 to 18 Question 14 1 / 1 pts Ultimate strength drops by 30% as steam temperature raises from ____ for unalloyed steel 600 to 700 c 300 to 400 c Correct! 400 to 500 c 700 to 800 c Question 15 1 / 1 pts A type of geothermal plant used when there is a presence of brine extracted from underground Correct! Binary geothermal plant https://canvas.instructure.com/courses/3461249/quizzes/9025335 7/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Dry geothermal plant Double-flash geothermal Single flash geothermal plant Question 16 1 / 1 pts The space above a suspended ceiling shall not be included in calculating the permissible quantity of refrigerant in the system unless such space is continuous and is part of the air return system Correct! Plenums Separator Plate divider Partition Question 17 1 / 1 pts Which of the following is not a method of starting a diesel engine? Manual: rope, crank and kick https://canvas.instructure.com/courses/3461249/quizzes/9025335 8/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Electric (battery) Compressed air Correct! Using another generator Question 18 1 / 1 pts Needs only single pump regardless of number of heaters Mono heater Open heater Correct! Closed heater Regenerative heater Question 19 1 / 1 pts A waiting room or large hallway serving as a waiting room Terrace Correct! Lobby https://canvas.instructure.com/courses/3461249/quizzes/9025335 9/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Compound room Rest room Question 20 1 / 1 pts An enclosed passage way that limits travel to a single path. Hallway Correct! Corridor Lobby Tunnel Question 21 1 / 1 pts What is the maximum velocity in a sewer flowing full? 0.9 m/sec 1.2 m/sec Correct! 0.6 m/sec https://canvas.instructure.com/courses/3461249/quizzes/9025335 10/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 1.8 m/sec Question 22 1 / 1 pts A turbine that has a diagonal flow Propeller turbine Correct! Deriaz turbine Impulse turbine Francis turbine Question 23 1 / 1 pts The _____ follows a line of constant wet-bulb temperature on the psychrometric chart. Condensive cooling process None of these Correct! Evaporative cooling process Direct cooling process https://canvas.instructure.com/courses/3461249/quizzes/9025335 11/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Question 24 1 / 1 pts Process used commercially in coal liquefaction. Tropsch process Correct! Fisher-tropsch process Mitch-tropsch process Fisher process Question 25 1 / 1 pts Morse test is use to measure the _______ of multi-cylinder engine. Break power Motor power Correct! Indicated power Friction power https://canvas.instructure.com/courses/3461249/quizzes/9025335 12/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Question 26 1 / 1 pts ____ is energy in transition Work None of these Correct! Heat Power Question 27 1 / 1 pts In a compression ignition engine, the detonation occurs near the ________. End of combustion Beginning of interaction Correct! Beginning of combustion Middle of combustion https://canvas.instructure.com/courses/3461249/quizzes/9025335 13/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Question 28 1 / 1 pts Ph value of ______ is usually maintained for boiler water to minimized corrosion. 11.5 8.5 Correct! 10.5 9.5 Question 29 1 / 1 pts Which of the following head loss coefficient among the following types of entrance? Correct! Reentrant Bell mouth It depends Square edge https://canvas.instructure.com/courses/3461249/quizzes/9025335 14/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Question 30 1 / 1 pts What type of turbine that has a degree of reaction of ½? Reaction turbine Deriaz turbine Correct! Rarsons turbine Impulse turbine Question 31 1 / 1 pts Carbon dioxide can be removed by: Evaporation Deaeration Vaporization Correct! Aeration Question 32 https://canvas.instructure.com/courses/3461249/quizzes/9025335 1 / 1 pts 15/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 A type of turbine employed where steam continuously extracted for process heating Back-pressure turbine Correct! Passout turbine Gas turbine Steam turbine Question 33 1 / 1 pts Reheating process in Brayton cycle, the turbine work will Correct! Increase Decrease Remains the same None of these Question 34 1 / 1 pts What waste treatment method involves of algae from stabilization pond effluents? https://canvas.instructure.com/courses/3461249/quizzes/9025335 16/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Floatation Correct! Microscreening Filtration Sedimentation Question 35 1 / 1 pts As the air passes through a diffuser, which of the following will decrease? Temperature Correct! Mach number Internal energy Enthalpy Question 36 1 / 1 pts Select the one that is a positive indication of pollution of a river. https://canvas.instructure.com/courses/3461249/quizzes/9025335 17/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Oxygen content Nitrite content Acidity Correct! Chloride content Question 37 1 / 1 pts What is the line defined by the water level in a group of artesian wells? Specific yield Correct! Peizometric surface All of the above Water table Question 38 1 / 1 pts During simple heating and cooling process has a ____ humidity ratio https://canvas.instructure.com/courses/3461249/quizzes/9025335 18/43 9/20/21, 4:31 PM Correct! PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Constant Increasing None of these Decreasing Question 39 1 / 1 pts For steady flow devices, the volume of the control volume is Correct! constant none of these increase decrease Question 40 1 / 1 pts Robert Boyle observed during his experiments with a vacuum chamber that the pressure of gases is inversely proportional to their https://canvas.instructure.com/courses/3461249/quizzes/9025335 19/43 9/20/21, 4:31 PM Correct! PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Volume Temperature None of these Pressure Question 41 1 / 1 pts By reheating the steam before entering the second stage in Rankine cycle, which of the following will decrease? turbine work heat rejected heat added Correct! moisture content after expansion Question 42 1 / 1 pts Is the combination of base load and peaking load. combine load rated load over-all load https://canvas.instructure.com/courses/3461249/quizzes/9025335 20/43 9/20/21, 4:31 PM Correct! PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 intermediate load Question 43 1 / 1 pts States that when conductor and magnetic field move relatively to each other, an electric voltage is induced in the conductor. Newtons law Maxwell’s law Kirchoff’s law Correct! Faraday’s law Question 44 1 / 1 pts By superheating the refrigerant in vapor compression cycle without useful cooling, which of the following will not be affected? (use per unit mass analysis) Refrigerated effect Correct! Compressor power COP Mass flow rate https://canvas.instructure.com/courses/3461249/quizzes/9025335 21/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Question 45 1 / 1 pts By decreasing the temperature sink of Carnot cycle, which of the following will not be affected? Correct! Heat added Heat rejected Work Efficiency Question 46 1 / 1 pts in a ______ cooling tower, the air moves horizontally through the fills as the water moves downward. Correct! cross flow double flow parallel flow counter flow Question 47 1 / 1 pts it is a heat exchanger which utilizes the heat of the flue gases to preheat the air needed for combustion https://canvas.instructure.com/courses/3461249/quizzes/9025335 22/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 feedwater heater Correct! air preheater economizer reheater Question 48 1 / 1 pts this form of energy is due to the position or elevation of the body Correct! potential energy work internal energy kinetic energy Question 49 1 / 1 pts the mass of water interspersed in each kilogram of dry air enthalpy Correct! humidity ratio specific volume relative humidity https://canvas.instructure.com/courses/3461249/quizzes/9025335 23/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Question 50 1 / 1 pts the transfer of energy from the more energetic in two or more energetic particles of a substance to the adjacent less energetic ones as a result of interaction between the particles convection Correct! conduction heat transfer radiation Question 51 1 / 1 pts In an ideal Rankine cycle with fixed boiler and condenser pressures. What is the effect of superheating the steam to a higher temperature, the pump work input will: decrease Correct! remains the same none of these increase Question 52 1 / 1 pts this refers to the rate of heat transfer attribute only to a change in drybulb temperature https://canvas.instructure.com/courses/3461249/quizzes/9025335 24/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 humidification Correct! sensible heating or cooling cooling and dehumidifying dehumidification Question 53 1 / 1 pts The most widely used absorption system is the ammonia-water system, where ammonia is serves as a refrigerant and H20 as the heating Correct! transport medium heating and cooling cooling Question 54 1 / 1 pts it is the work done in pushing a fluid across a boundary, usually into or out a system electrical work mechanical work non flow work Correct! flow work https://canvas.instructure.com/courses/3461249/quizzes/9025335 25/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Question 55 1 / 1 pts it is simply the compression of the gas in two or more cylinders in place of a single cylinder compressor Correct! multistage compression intercooled compression efficient compression performance compression Question 56 1 / 1 pts What is the maximum velocity of sewer flowing full? Correct! 0.6 m/s 1.2 m/s 0.9 m/s 1.8 m/s Question 57 1 / 1 pts Which of the following is not a method of starting a diesel engine? Compressed air Manual: rope, crank and kick https://canvas.instructure.com/courses/3461249/quizzes/9025335 26/43 9/20/21, 4:31 PM Correct! PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Using another generator Electric (battery) Question 58 1 / 1 pts The amount of moisture in air depends on its Volume Pressure Humidity Correct! Temperature Question 59 1 / 1 pts In thermal power plant, induced draft fans are located at the Exit of furnace Above the stack Top of the stack Correct! Foot of the stack Question 60 1 / 1 pts Is often used to absorb silica from water https://canvas.instructure.com/courses/3461249/quizzes/9025335 27/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Silica gel Sorbent Correct! Magnesium hydroxide Rectifier Question 61 1 / 1 pts If Joule Thompson coefficient is equal to zero, then the process will become Isobaric Isenthalpic Isentropic Correct! Isothermal Question 62 1 / 1 pts Is the ratio of fixed carbon and volatile matter Carbon-volatile ratio Air-fuel ratio Combustion ratio Correct! Fuel ratio https://canvas.instructure.com/courses/3461249/quizzes/9025335 28/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Question 63 1 / 1 pts If the fluid passed through a nozzle its entropy will Increase Correct! Remains the same Decrease None of these Question 64 1 / 1 pts A suspension of a finely divide fluid in another Correct! Emulsion Filtration Flotation Separation Question 65 1 / 1 pts A type of turbine employed where steam continuously extracted for process heating. Correct! Passoul turbine Back pressure turbine https://canvas.instructure.com/courses/3461249/quizzes/9025335 29/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Gas turbine Steam turbine Question 66 1 / 1 pts Is use to subcooled the refrigerant from the condenser Liquid receiver Desuperheating coils Correct! Liquid subcooler Condenser subcooler Question 67 1 / 1 pts Use to increase the capacity of condenser Water regulating valve Condenser heating coils Correct! Desuperheating coils Liquid-suction heat exchanger Question 68 1 / 1 pts A type of geothermal plant used when there is a presence of brine extracted from underground, https://canvas.instructure.com/courses/3461249/quizzes/9025335 30/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Double-flash geothermal plant Dry geothermal plant Single flash geothermal plant Correct! Binary geothermal plant Question 69 1 / 1 pts Refrigerant number 744 is Propane Correct! Carbon dioxide Butane Carbon Monoxide Question 70 1 / 1 pts Refrigerant number R-1150 is Ethane Propylene Correct! Ethene Methyl Formate https://canvas.instructure.com/courses/3461249/quizzes/9025335 31/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Question 71 1 / 1 pts For multi-stage compression of an ideal Brayton cycle, back work ratio will Correct! Decrease Increase None of these Remains the same Question 72 1 / 1 pts Which instruments is used to measure humidity of the atmosphere continuously? Barograph Thermo-hydrograph Thermograph Correct! Hydrograph Question 73 1 / 1 pts Air motion also plays important role in Cooling Surroundings https://canvas.instructure.com/courses/3461249/quizzes/9025335 32/43 9/20/21, 4:31 PM Correct! PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Human comfort None of these Question 74 1 / 1 pts The space above a suspended ceiling shall not included in calculating the permissible quantity of refrigerant in the system unless such space is continuous and is part of the air return system. Partition Separator Plate divider Correct! Plenums Question 75 1 / 1 pts The fuel injection process in diesel engine starts when the piston ______. Halfway of the stroke Is at the TDC Leaving TDC Correct! Approaches TDC Question 76 https://canvas.instructure.com/courses/3461249/quizzes/9025335 1 / 1 pts 33/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Which of the following is NOT a part of high pressure side in refrigeration system? Liquid line Correct! Suction line Condenser Compressor Question 77 1 / 1 pts Entrance losses between tank and pipe or losses through elbows, fittings and valves are generally expresses as a functions of Pipe diameter Volume flow rate Friction factor Correct! Kinetic energy Question 78 1 / 1 pts Is the most important safety device on the power boiler Check valve Correct! Safety valve Globe valve Gate valve https://canvas.instructure.com/courses/3461249/quizzes/9025335 34/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Question 79 1 / 1 pts Ph value of _____ is usually maintained for boiler water to minimized corrosion 11.5 8.5 Correct! 10.5 9.5 Question 80 1 / 1 pts Show the variation of river flow (discharge) with time Flow duration curve Hyctograph Mass curve Correct! Hydrograph Question 81 1 / 1 pts If the pressure drop in the condenser increases in a vapor compression cycle, which of the following will decrease? (Use per unit mass analysis) https://canvas.instructure.com/courses/3461249/quizzes/9025335 35/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Refrigerating effect Compressor power Correct! Mass flow rate Heat rejected in the condenser Question 82 0 / 1 pts By increasing the condenser pressure in vapor compression cycle, which of the following will increase? (Use per unit mass analysis) ou Answered COP Specific volume of suction Refrigerating effect orrect Answer Compressor power Question 83 0 / 1 pts By increasing the temperature sink of Carnot cycle, which of the following will not be affected? ou Answered Heat rejected Efficiency Work orrect Answer Heat added https://canvas.instructure.com/courses/3461249/quizzes/9025335 36/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Question 84 1 / 1 pts By lowering the condenser pressure in Rankine cycle, which of the following will decrease? (Use per unit mass analysis) Cycle efficiency Pump work Turbine work Correct! Heat rejected Question 85 1 / 1 pts Transfers heat directly to electrical energy by utilizing thermionic emissions. Thermionic cell Thermionic motor Thermionic converter Correct! Thermionic generator Question 86 1 / 1 pts Brayton cycle is also known as Carnot cycle Diesel cycle https://canvas.instructure.com/courses/3461249/quizzes/9025335 37/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Rankine cycle Correct! Joule cycle Question 87 1 / 1 pts By superheating the refrigerant in vapor compression cycle with useful cooling, which of the following will increase? (Use per unit mass analysis) Condenser pressure Quality after expansion Evaporator pressure Correct! Heat rejected from condenser Question 88 1 / 1 pts A type of turbine used in desalination of seawater. Passout turbine Reaction turbine Correct! Back pressure turbine Peaking turbine Question 89 https://canvas.instructure.com/courses/3461249/quizzes/9025335 1 / 1 pts 38/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Is applied to propulsion of vehicles because of certain practical characteristics Otto cycle Carnot cycle Correct! Brayton cycle Diesel cycle Question 90 1 / 1 pts By superheating the steam to a higher temperature in Rankine cycle, which of the following decrease? (Use per unit mass analysis) Heat added Turbine work Heat rejected Correct! Moisture content at the turbine exhaust Question 91 1 / 1 pts When Rankine cycle is modified with regeneration, which of the following will increase? Turbine work Heat added Heat rejected https://canvas.instructure.com/courses/3461249/quizzes/9025335 39/43 9/20/21, 4:31 PM Correct! PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Cycle efficiency Question 92 1 / 1 pts Grindability of standard coal 110 Correct! 100 90 80 Question 93 1 / 1 pts If the pressure drop in the evaporator increases in a vapor compression cycle, which of the following will increase? (Use per unit mass analysis) Vaporizing temperature COP Refrigerating effect Correct! Heat rejected in the condenser Question 94 1 / 1 pts Major constituent of all natural gases is https://canvas.instructure.com/courses/3461249/quizzes/9025335 40/43 9/20/21, 4:31 PM Correct! PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Methane Cethane Ethane Propane Question 95 1 / 1 pts If the pressure drop in the evaporator increases in a vapor compression cycle, which of the following will decrease? (Use per unit mass analysis) Heat rejected in the condenser Compressor power Correct! COP Specific volume at suction Question 96 1 / 1 pts When 1 gram of coal is subjected to a temperature of about 105 degC for a period of 1 hour, the loss in weight of the sample gives the Fixed carbon Correct! Moisture content Ash Volatile matter https://canvas.instructure.com/courses/3461249/quizzes/9025335 41/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Question 97 1 / 1 pts Is the largest group of coal containing 46-86% of fixed carbon and 20% to 40% volatile matter Sub-anthracite Sub-bituminous Correct! Bituminous Anthracite Question 98 1 / 1 pts Is the combination of base load and peaking load Correct! Intermediate load Over-all load Combine load Rated load Question 99 0 / 1 pts By increasing the temperature source of Carnot cycle which of the following will not be affected? ou Answered Heat rejected https://canvas.instructure.com/courses/3461249/quizzes/9025335 42/43 9/20/21, 4:31 PM PRACTICE TERMS - PIPE 3: REVIEW FEB 2022 Work Efficiency orrect Answer Heat added Question 100 1 / 1 pts Receives heat partly by convection and partly by radiation Convective superheater Radiant superheater desuperheater Correct! Pendant superheater https://canvas.instructure.com/courses/3461249/quizzes/9025335 43/43
