Description : The mechanical equivalent of heat is a. joule b. calorie c. Btu d. Specific heat
Last Answer : joule
Description : The unit of energy in S.I. units is (a) watt (b) joule (c) joule/s (d) joule/m (e) joule m.
Last Answer : Answer : b
Description : Water (specific heat cv= 4.2 kJ/ kg ∙ K ) is being heated by a 1500 W h eater. What is the rate of change in temperature of 1kg of the water? A. 0.043 K/s B. 0.179 K/s C. 0.357 K/s D. 1.50 K/s Formula: Q = mcv ( T)
Last Answer : 0.179 K/s
Description : What is the SI unit of specific heat capacity? A. J/kg B. J/kg °F ∙ C. J/kg °C ∙ D. J/°C
Last Answer : J/kg °C
Description : What is the specific heat capacity of water in J/kg °C? ∙ A. 4581 B. 4185 C. 4518 D. 4815
Last Answer : 4185
Description : The unit of power in S.I. units is (a) newton (b) pascal (c) erg (d) watt (e) joule.
Last Answer : Answer : d
Description : Who coined the word energy? a. James Joule b. Thomas Young c. Rudolf Diesel d. Kelvin
Last Answer : Thomas Young
Description : A Bell-Coleman cycle is a reversed of which the following cycles? a. Stirling cycle b. Joule cycle c. Carnot cycle d. Otto cycle
Last Answer : Joule cycle
Description : _________ is the unit of pressure and stress. a) Newton b) Pascal c) Hertz d) Joule
Last Answer : Pascal
Description : __________ is the unit of force. a) Newton b) Pascal c) Hertz d) Joule
Last Answer : Newton
Description : In thermodynamics, a throttling process, also called a _________, is a type of isenthalpic process where a liquid or gas is cooled as it passes from a higher pressure state to a lower pressure state. a. Rankine Process b. Carnot Cycle c. Joule-Thomson process d. Refrigeration process
Last Answer : Joule-Thomson process
Description : _________ is the quantity of heat required to raise the temperature of one pound of water 1 F˚ from 63 ˚F to 64 ˚F. a. one Joule b. one calorie c. one watt d. one BTU
Last Answer : one BTU
Description : What is defined as the ratio of the change in temperature to the change in pressure when a real gas is throttled? A. Rankine coefficient B. Kelvin coefficient C. Maxwell-Boltzmann coefficient D. Joule-Thomson coefficient
Last Answer : Joule-Thomson coefficient
Description : The amount of heat required to raise the temperature of 1 pound of water by 1°F is called ______. A. Calorie B. Joule C. BTU D. Kilocalorie
Last Answer : BTU
Description : The amount of heat required to raise the temperature of 1kg of water through 1 °C is called ______. A. Calorie B. Joule C. BTU D. Kilocalorie
Last Answer : Kilocalorie
Description : Entropy is measured in ______. A. Joule/Kelvin B. Joule-Meter/Kelvin C. Meter/Kelvin D. Newton/Kelvin
Last Answer : Joule/Kelvin
Description : What is the SI unit of energy? A. Newton B. Btu C. Calorie D. Joule
Last Answer : Joule
Description : The efficiency of Joule cycle is A. greater than Carnot cycle B. less than Carnot cycle C. equal to Carnot cycle D. none of these
Last Answer : Answer: B
Description : The amount of heat required to raise the temperature of the unit mass of gas through one degree at constant volume, is called A.specific heat at constant volume B.specific heat at constant pressure C.kilo Joule D.none of these
Last Answer : Answer: A
Description : The following cycle is used for air craft refrigeration (a) Brayton cycle (b) Joule cycle (c) Carnot cycle (d) Bell-Coleman cycle (e) Reversed-Brayton cycle.
Last Answer : Answer : e
Description : Which of the following cycles has maximum efficiency (a) Rankine (b) Stirling (c) Carnot (d) Brayton (e) Joule.
Last Answer : Answer : c
Description : Which of the following cycles is not a reversible cycle (a) Carnot (b) Ericsson (c) Stirling (d) Joule (e) none of the above.
Description : Reversed joule cycle is called (a) Carnot cycle (b) Rankine cycle (c) Brayton cycle (d) Bell Coleman cycle (e) Dual cycle.
Description : A cycle consisting of two adiabatics and two constant pressure processes is known as (a) Otto cycle (b) Ericsson cycle (c) Joule cycle (d) Stirling cycle (e) Atkinson cycle.
Description : Thermal power plant works on (a) Carnot cycle (b) Joule cycle (d) Rankine cycle (d) Otto cycle (e) Brayton cycle.
Description : Calculate the power output in horsepower of an 80-kg man that climbs a flight of stairs 3.8 m high in 4.0 s. a) 744.8 hp b) 0.998 hp c) 746 hp d) 1.998 hp Formula: Power = Fd/t = mgh/t F = W = mg d = h
Last Answer : 0.998 hp
Description : A certain fluid is flowing in a 0.5m x 0.3 channel at the rate of 3 m/s and has a specific volume of 0.012 m³/kg. Determined the mass of water flowing in kg/s. a. 267 kg/s b. 378 kg/s c. 375 kg/s d. 456.5 kg/s m = Aν/V
Last Answer : 375 kg/s
Description : The unit “pascal” is equivalent to ______. A. N/m^2 B. N/m C. N-m D. N-m^2
Last Answer : N/m^2
Description : Two masses, one of the 10kg and the other unknown, are placed on a scale in a region where g = 9.67 m/sec2 . The combined weight of these two masses is 174.06 N. Find the unknown mass in kg. a. 20 kg b. 19 kg c. 18 kg d. 17 kg formula: m=Fg k / g
Last Answer : 18 kg
Description : Utilizing the answer to the previous problem, estimate the overall or average increase in temperature ( ΔT) of the concrete roof from the energy absorbed from the sun during a12hour day. Assume that all of the radiation absorbed goes into ... °C b. 8.9°C c. 9.9°C d. 10.9°C formula: ΔQ = m c ΔT
Last Answer : 7.9 °C
Description : A 30-m vertical column of fluid (density 1878 kg/m3 ) is located where g= 9.65 mps2 . Find the pressure at the base of the column. (Formula: pg= gρhg/k ) a. 543680 N/m2 b. 543.68 kPa (gauge) c. Both a & b d. None of the above
Last Answer : Both a & b
Description : A vessel with a volume of cubic meter contains liquid water and water vapor ion equilibrium at 600 kPa. The liquid water has mass of1kg. Using the steam table, calculate the mass of the water vapor. A. 0.99kg B. 1.57 kg C ... / kg vg = 0.3157 m^3 / kg Vtot = mƒ vƒ + mg vg mg = (tot-mƒ vƒ) / vg
Last Answer : 3.16 kg
Description : A 10m^3 vessel initially contains 5 m^3 of liquid water and 5 m^3 of saturated water vapor at 100 kPa. Calculate the internal energy of the system using the steam table. A. 5 x10^5 kJ B. 8x10^5 kJ C. 1 ... 3 kJ/kg ug= 2506kJ/kg formula: Mvap = V vap/vg M liq = Vliq/ vƒ u =uƒM liq + ug M vap
Last Answer : 2 x10^6 kJ
Description : What is the value of the universal gas constant in kJ/kmol K? ∙ A. 10.73 B. 1.986 C. 8.314 D. 1545
Last Answer : 8.314
Description : The unit of pressure in S.I. units is (a) kg/cm2 (b) mm of water column (c) pascal (d) dynes per square cm (e) bars
Description : The first law of thermodynamics may be expressed in the following equivalent a. the net heat transfer id equal to the network b. the sum of the total energy forms leaving the system boundary is ... neither be created nor destroyed but only converted from one form to another d. all of the above
Last Answer : all of the above
Description : Two thick slices of bread, when completely oxidized by the body, can supply 200,000 cal of heat. How much work is this equivalent to? a) 4,190,000 joules b) 8,390,000 joules c) 839, ... d) 419 000 joules Formula: J =Work/Heat J = mechanical equivalent of heat whose value is 4.19 joules/calorie
Last Answer : 419 000 joules
Description : How many joules of work is the equivalent of 15000 cal of heat? a) 62850 joules b) 3579.95 joules c) 14995.81 joules d) 15004.19 joules Formula: J =Work/Heat J = mechanical equivalent of heat whose value is 4.19 joules/calorie
Last Answer : 62850 joules
Description : _________ is defined as that equivalent to the pressure due to a column of mercury 76cm long. a. surface pressure b. gage pressure c. standard atmospheric pressure d. isobaric pressure
Last Answer : standard atmospheric pressure
Description : 1 British thermal unit (BTU) is equivalent to how many joules? A. 1016 B. 1043 C. 1023 D. 1054
Last Answer : 1054
Description : One erg is equivalent to how many joules? A. 10^-8 B. 10^-7 C. 10^-6 D. 10^-5
Last Answer : 10^-7
Description : One calorie is equivalent to how many joules? A. 4.448 B. 4.184 C. 4.418 D. 4.814
Last Answer : 4.184
Description : 1 atm is equivalent to how many pascals? A. 101,325 B. 101,689 C. 101,102 D. 101,812
Last Answer : 101,325
Description : 1 bar is equivalent to how many pascals? A. 10^3 B. 10^4 C. 10^5 D. 10^6
Last Answer : 10^5
Description : A 0.064 kg of octane vapor (MW = 114) is mixed with0.91 kg of air (MW = 29.0) in the manifold of an Engine. The total pressure in the manifold is 86.1 kPa, and a temperature is 290 K. assume octane behaves ideally. What is ... of the air in the mixture in KPa? a. 46.8 b. 48.6 c. 84.6 d. 64.8
Last Answer : 84.6
Description : The SI unit of mass a. kg b. g c. N d. None of the above
Last Answer : kg
Description : Specific heat capacity in SI unit. a. kJ / kg.k b. kJ / kg c. kN / kg d. None of the above
Last Answer : kJ / kg.k
Description : Steam is throttled to 0.1 MPa with 20 degrees of superheat. (a) What is the quality of throttled steam if its pressure is 0.75 MPa (b) What is the enthalpy of the process? a) 97.6%,2713 kJ/kg b) -97.6%, 2713 kJ/kg c) 87.6%,3713 kJ/kg d) -87.6%, 3713 kJ/kg
Last Answer : 97.6%,2713 kJ/kg
Description : A 1-kg steam-water mixture at 1.0 MPa is contained in an inflexible tank. Heat is added until the pressure rises to 3.5 MPa and the temperature to 400°. Determine the heat added. a) 1378.7 kJ b) 1348.5 kJ c) 1278,7 kJ d) 1246,5 kJ Formula: Q = (h2 – p2v2) –(h1 –p1v1)
Last Answer : 1378.7 kJ
Description : For a certain gas R = 320 J/kg.K and cv= 0.84kJ/kg.K. Find k? a. 1.36 b. 1.37 c. 1.38 d. 1.39 formula: k= R / cv+1
Last Answer : 1.38