Solids and liquids have  (a) one value of specific heat (ft) two values of specific heat  (c) three values of specific heat  (d) no value of specific heat  (e) one value under some conditions and two values under other conditions.

Solids and liquids have
 (a) one value of specific heat (ft) two values of specific heat
 (c) three values of specific heat
 (d) no value of specific heat
 (e) one value under some conditions and two values under other conditions.
by

1 Answer

Answer :

Answer : a
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Related questions

Gases have  (a) only one value of specific heat  (b) two values of specific heat  (c) three values of specific heat  (d) no value of specific heat  (e) under some conditions one value and sometimes two values of specific heat.

Description : Gases have  (a) only one value of specific heat  (b) two values of specific heat  (c) three values of specific heat  (d) no value of specific heat  (e) under some conditions one value and sometimes two values of specific heat.

Last Answer : Answer : b

According to Avogadro’s Hypothesis  (a) the molecular weights of all the perfect gases occupy the same volume under same conditions of pressure and temperature  (b) the sum of partial pressure of mixture of two gases is sum of the two  (c) product of the gas constant and the molecular weight of an ideal gas is constant  (d) gases have two values of specific heat  (e) all systems can be regarded as closed systems.

Description : According to Avogadro's Hypothesis  (a) the molecular weights of all the perfect gases occupy the same volume under same conditions of pressure and temperature  (b) the sum of partial pressure of ... gases have two values of specific heat  (e) all systems can be regarded as closed systems.

Last Answer : Answer : a

Which of the following have the highest thermal conductivities?  a. liquids  b. gases  c. metals  d. solids other than metals

Description : Which of the following have the highest thermal conductivities?  a. liquids  b. gases  c. metals  d. solids other than metals

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Steam at 1000 lbf/ft^2 pressure and 300˚R has specific volume of 6.5 ft^3/lbm and a specific enthalpy of 9800 lbf-ft/lbm. Find the internal energy per pound mass of steam.  A.2500 lbf-ft/lbm  B.3300 lbf-ft/lbm  C.5400 lbf-ft/lbm  D.6900 lbf-ft/lbm Formula: h= u+ pV u= h– pV

Description : Steam at 1000 lbf/ft^2 pressure and 300˚R has specific volume of 6.5 ft^3/lbm and a specific enthalpy of 9800 lbf-ft/lbm. Find the internal energy per pound mass of steam.  A.2500 lbf-ft/lbm  B.3300 lbf-ft/lbm  C.5400 lbf-ft/lbm  D.6900 lbf-ft/lbm Formula: h= u+ pV u= h– pV

Last Answer : 3300 lbf-ft/lbm

If air is at pressure, p, of 3200 lbf/ft2 , and at a temperature, T, of 800 ˚R, what is the specific volume, v? (R=5303 ft-lbf/lbm-˚R, and air can be modeled as an ideal gas.)  A.9.8 ft^3/lbm  B.11.2 ft^3/lbm  C.13.33 ft^3/lbm  D.14.2 ft^3/lbm Formula: pv = RT v = RT / p

Description : If air is at pressure, p, of 3200 lbf/ft2 , and at a temperature, T, of 800 ˚R, what is the specific volume, v? (R=5303 ft-lbf/lbm-˚R, and air can be modeled as an ideal gas.)  A.9.8 ft^3/lbm  B.11.2 ft^3/lbm  C.13.33 ft^3/lbm  D.14.2 ft^3/lbm Formula: pv = RT v = RT / p

Last Answer : 13.33 ft^3/lbm

Ten cu. ft of air at 300psia and 400°F is cooled to 140°F at constant volume. What is the transferred heat?  a.-120Btu  b. -220Btu  c.-320Btu  d. -420Btu formula: Q= mcv(T2-T1)

Description : Ten cu. ft of air at 300psia and 400°F is cooled to 140°F at constant volume. What is the transferred heat?  a.-120Btu  b. -220Btu  c.-320Btu  d. -420Btu formula: Q= mcv(T2-T1)

Last Answer : -420Btu

For most solids, the coefficient of volume expansion is _________ the coefficient of linear expansion.  a. unrelated to  b. proportional to  c. twice  d. three times

Description : For most solids, the coefficient of volume expansion is _________ the coefficient of linear expansion.  a. unrelated to  b. proportional to  c. twice  d. three times

Last Answer : three times

The value of specific heat at constant pressure (cp) is __________ that of at constant volume (cv).  A. less than  B. equal to  C. more than

Description : The value of specific heat at constant pressure (cp) is __________ that of at constant volume (cv).  A. less than  B. equal to  C. more than

Last Answer : Answer: C

Which law states that the specific heat of a gas remains constant at all temperatures and pressures  (a) Charles’ Law  (b) Joule’s Law  (c) Regnault’s Law  (d) Boyle’s Law  (e) there is no such law.

Description : Which law states that the specific heat of a gas remains constant at all temperatures and pressures  (a) Charles’ Law  (b) Joule’s Law  (c) Regnault’s Law  (d) Boyle’s Law  (e) there is no such law.

Last Answer : Answer : c

Carnot cycle is  (a) a reversible cycle (ft) an irreversible cycle  (c) a semi-reversible cycle  (d) a quasi static cycle  (e) an adiabatic irreversible cycle.

Description : Carnot cycle is  (a) a reversible cycle (ft) an irreversible cycle  (c) a semi-reversible cycle  (d) a quasi static cycle  (e) an adiabatic irreversible cycle.

Last Answer : Answer : a

Which law that states “Entropy of all perfect crystalline solids is zero at absolute zero temperature”?  a. Zeroth law of thermodynamics  b. First law of thermodynamics  c. Second law of thermodynamics  d. Third law of thermodynamics

Description : Which law that states “Entropy of all perfect crystalline solids is zero at absolute zero temperature”?  a. Zeroth law of thermodynamics  b. First law of thermodynamics  c. Second law of thermodynamics  d. Third law of thermodynamics

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______________ is the temperature at which liquids start to boil or the temperature at which vapors begin to condense.  a. Saturation Temperature  b. Sub cooled Liquid  c. Compressed Liquid  d. Saturated Liquid

Description : ______________ is the temperature at which liquids start to boil or the temperature at which vapors begin to condense.  a. Saturation Temperature  b. Sub cooled Liquid  c. Compressed Liquid  d. Saturated Liquid

Last Answer : Saturation Temperature

_____ is that property of a substance which remains constant if no heat enters or leaves the substance, while it does work or alters its volume, but which increases or diminishes should a small amount of heat enter or leave.  a. Entrophy  b. Enthalpy  c. Specific Heat  d. None of the above

Description : _____ is that property of a substance which remains constant if no heat enters or leaves the substance, while it does work or alters its volume, but which increases or diminishes should a small amount of heat enter or leave.  a. Entrophy  b. Enthalpy  c. Specific Heat  d. None of the above

Last Answer : Entrophy

Two 12 ft. sections of aluminum siding are placed end to end on the outside wall of house. How large a gap should be left between the pieces to prevent buckling if the temperature can change by 55˚C?  a. 0.21 m  b. 0.18 m  c. 0.31 in  d. 0.18 in

Description : Two 12 ft. sections of aluminum siding are placed end to end on the outside wall of house. How large a gap should be left between the pieces to prevent buckling if the temperature can change by 55˚C?  a. 0.21 m  b. 0.18 m  c. 0.31 in  d. 0.18 in

Last Answer : 0.18 in

A certain gas, with cp = 0.529Btu/ lb. °Rand R = 96.2ft.lb/lb. °R, expands from 5 cu ft and 80°F to 15 cu ft while the pressure remains constant at 15.5psia. Compute for T2.  a.1520°R  b. 1620°R  c. 1720°R  d. 1820°R formula: T2= T1V2/V1

Description : A certain gas, with cp = 0.529Btu/ lb. °Rand R = 96.2ft.lb/lb. °R, expands from 5 cu ft and 80°F to 15 cu ft while the pressure remains constant at 15.5psia. Compute for T2.  a.1520°R  b. 1620°R  c. 1720°R  d. 1820°R formula: T2= T1V2/V1

Last Answer : 1620°R

The flow energy of 5 ft3 of a fluid passing a boundary to a system is 80,000 ft-lb. Determine the pressure at this point.  a. 222 psi  b. 333 psi  c. 444 psi  d. 111 psi formula: Ef= pV

Description : The flow energy of 5 ft3 of a fluid passing a boundary to a system is 80,000 ft-lb. Determine the pressure at this point.  a. 222 psi  b. 333 psi  c. 444 psi  d. 111 psi formula: Ef= pV

Last Answer : 111 psi

A vertical column of water will be supported to what height by standard atmospheric pressure. If the Y w = 62.4lb/ft3 po = 14.7 psi.  a. 44.9 ft  b. 33.9 ft  c. 22.9 ft  d. 55.9 ft formula: ho= po/Yw

Description : A vertical column of water will be supported to what height by standard atmospheric pressure. If the Y w = 62.4lb/ft3 po = 14.7 psi.  a. 44.9 ft  b. 33.9 ft  c. 22.9 ft  d. 55.9 ft formula: ho= po/Yw

Last Answer : 33.9 ft

A vertical column of water will be supported to what height by standard atmospheric pressure.  a. 33.9 ft  b. 45 ft  c. 67 ft  d. 25.46 ft ho= Po/Yo

Description : A vertical column of water will be supported to what height by standard atmospheric pressure.  a. 33.9 ft  b. 45 ft  c. 67 ft  d. 25.46 ft ho= Po/Yo

Last Answer : 33.9 ft

Calculate: a. Mass flow rate in lb/hr. b. The velocity at section 2 in fps  a. 800,000lb/hr;625ft/s  b. 900,000lb/hr;625 ft/s  c. 888,000lb/hr;269 ft/s  d. 700,000lb/hr;269 ft/s m = A1V!/V1

Description : Calculate: a. Mass flow rate in lb/hr. b. The velocity at section 2 in fps  a. 800,000lb/hr;625ft/s  b. 900,000lb/hr;625 ft/s  c. 888,000lb/hr;269 ft/s  d. 700,000lb/hr;269 ft/s m = A1V!/V1

Last Answer : 900,000 lb/hr;625 ft/s

A certain gas with cp = 0.529Btu/lb°R and R = 96.2ft/lbºR expands from 5 ft and 80ºF to 15 ft while the pressure remains constant at 15.5 psia.  a. T2=1.620ºR, ∫H = 122.83 Btu  b. T2 = 2°R, ∫H = 122.83 Btu  c. T2 = 2.620ºR, ∫H = 122.83 Btu  d. T2 = 1°R, ∫H = 122.83 Btu T2= V2(t2)/V1 and ∫H = mcp (T2-T1)

Description : A certain gas with cp = 0.529Btu/lb°R and R = 96.2ft/lbºR expands from 5 ft and 80ºF to 15 ft while the pressure remains constant at 15.5 psia.  a. T2=1.620ºR, ∫H = 122.83 Btu  b. T2 = 2°R, ∫H = 122.83 Btu  c. ... , ∫H = 122.83 Btu  d. T2 = 1°R, ∫H = 122.83 Btu T2= V2(t2)/V1 and ∫H = mcp (T2-T1)

Last Answer : T2=1.620ºR, ∫H = 122.83 Btu

A certain gas, with cp = 0.529Btu/lb.°R and R = 96.2 ft.lb/lb.°R, expands from 5 cu ft and 80°F to 15 cu ft while the pressure remains constant at 15.5 psia. Compute for T2. (Formula: T2= T1V2/V1)  a. 460°R  b. 270°R  c. 1620 °R  d. None of the above

Description : A certain gas, with cp = 0.529Btu/lb.°R and R = 96.2 ft.lb/lb.°R, expands from 5 cu ft and 80°F to 15 cu ft while the pressure remains constant at 15.5 psia. Compute for T2. (Formula: T2= T1V2/V1)  a. 460°R  b. 270°R  c. 1620 °R  d. None of the above

Last Answer : 1620 °R

Ten cu ft. of air at 300 psia 400°F is cooled to 140°F at constant volume. What is the final pressure? (formula: p2 = p1T2/T1)  a. 0  b. 209 psia  c. - 420 psia  d. None of the above

Description : Ten cu ft. of air at 300 psia 400°F is cooled to 140°F at constant volume. What is the final pressure? (formula: p2 = p1T2/T1)  a. 0  b. 209 psia  c. - 420 psia  d. None of the above

Last Answer : 209 psia

What horse power is required to isothermally compress 800 ft^3 of Air per minute from 14.7 psia to 120 psia?  A. 28 hp  B.108 hp  C.256 hp  D.13900 hp Formula: W= p1V1 ln (p1/p2) Power = dW / dt

Description : What horse power is required to isothermally compress 800 ft^3 of Air per minute from 14.7 psia to 120 psia?  A. 28 hp  B.108 hp  C.256 hp  D.13900 hp Formula: W= p1V1 ln (p1/p2) Power = dW / dt

Last Answer : 108 hp

A problem Drum ( 3 ft. diameter ; 6 ft. height ) is field with a fluid whose density is 50 lb/ft^3. Determine the total volume of the fluid.  A. 42.41 ft^3  B.44.35 ft^3  C.45.63 ft^3  D.41.23 ft^3 Formula: Vf = (pi d^2 h) / 4

Description : A problem Drum ( 3 ft. diameter ; 6 ft. height ) is field with a fluid whose density is 50 lb/ft^3. Determine the total volume of the fluid.  A. 42.41 ft^3  B.44.35 ft^3  C.45.63 ft^3  D.41.23 ft^3 Formula: Vf = (pi d^2 h) / 4

Last Answer : 42.41 ft^3

3.0 lbm of air are contained at 25 psia and 100 ˚F. Given that Rair = 53.35 ft-lbf/lbm- ˚F, what is the volume of the container?  A.10.7 ft^3  B.14.7 ft^3  C.15 ft^3  D.24.9 ft^3 Formula: use the ideal gas law pV = mRT T = (100 +460) ˚R V = mRT/p

Description : 3.0 lbm of air are contained at 25 psia and 100 ˚F. Given that Rair = 53.35 ft-lbf/lbm- ˚F, what is the volume of the container?  A.10.7 ft^3  B.14.7 ft^3  C.15 ft^3  D.24.9 ft^3 Formula: use the ideal gas law pV = mRT T = (100 +460) ˚R V = mRT/p

Last Answer : 24.9 ft^3

Universal gas constant is defined as equal to product of the molecular weight of the gas and  (a) specific heat at constant pressure  (b) specific heat at constant volume  (c) ratio of two specific heats  (d) gas constant  (e) unity.

Description : Universal gas constant is defined as equal to product of the molecular weight of the gas and  (a) specific heat at constant pressure  (b) specific heat at constant volume  (c) ratio of two specific heats  (d) gas constant  (e) unity.

Last Answer : Answer : d

Calorie is a measure of  (a) specific heat  (b) quantity of heat  (c) thermal capacity  (d)entropy  (e) work.

Description : Calorie is a measure of  (a) specific heat  (b) quantity of heat  (c) thermal capacity  (d)entropy  (e) work.

Last Answer : Answer : b

The specific heat of air increases with increase in  (a) temperature  (b) pressure  (c) both pressure and temperature  (d) variation of its constituents  (e) air flow

Description : The specific heat of air increases with increase in  (a) temperature  (b) pressure  (c) both pressure and temperature  (d) variation of its constituents  (e) air flow

Last Answer : Answer : a

The index of compression n tends to reach ratio of specific heats y when  (a) flow is uniform and steady  (b) process is isentropic  (c) process is isothermal  (d) process is isentropic and specific heat does not change with temperature  (e) process is isentropic and specific heat changes with temperature.

Description : The index of compression n tends to reach ratio of specific heats y when  (a) flow is uniform and steady  (b) process is isentropic  (c) process is isothermal  (d) process ... specific heat does not change with temperature  (e) process is isentropic and specific heat changes with temperature.

Last Answer : Answer : d

Which of the following is not the intensive property  (a) pressure  (b) temperature  (c) density  (d) heat  (e) specific volume.

Description : Which of the following is not the intensive property  (a) pressure  (b) temperature  (c) density  (d) heat  (e) specific volume.

Last Answer : Answer : d

Which of the following quantities is not the property of the system  (a) pressure  (b) temperature  (c) specific volume  (d) heat  (e) density.

Description : Which of the following quantities is not the property of the system  (a) pressure  (b) temperature  (c) specific volume  (d) heat  (e) density.

Last Answer : Answer : d

Specific heat of air at constant pressure is equal to  (a) 0.17  (b) 0.21  (c) 0.24  (d) 1.0  (e) 1.41

Description : Specific heat of air at constant pressure is equal to  (a) 0.17  (b) 0.21  (c) 0.24  (d) 1.0  (e) 1.41

Last Answer : Answer : c

According to kinetic theory of gases, the absolute zero temperature is attained when  (a) volume of the gas is zero  (b) pressure of the gas is zero  (c) kinetic energy of the molecules is zero  (d) specific heat of gas is zero  (e) mass is zero.

Description : According to kinetic theory of gases, the absolute zero temperature is attained when  (a) volume of the gas is zero  (b) pressure of the gas is zero  (c) kinetic energy of the molecules is zero  (d) specific heat of gas is zero  (e) mass is zero.

Last Answer : Answer : c

Boyle’s law i.e. pV = constant is applicable to gases under  (a) all ranges of pressures  (b) only small range of pressures  (c) high range of pressures  (d) steady change of pressures  (e) atmospheric conditions.

Description : Boyle’s law i.e. pV = constant is applicable to gases under  (a) all ranges of pressures  (b) only small range of pressures  (c) high range of pressures  (d) steady change of pressures  (e) atmospheric conditions.

Last Answer : Answer : b

Absolute zero pressure will occur  (a) at sea level  (b) at the center of the earth  (c) when molecular momentum of the system becomes zero  (d) under vacuum conditions  (e) at a temperature of – 273 °K

Description : Absolute zero pressure will occur  (a) at sea level  (b) at the center of the earth  (c) when molecular momentum of the system becomes zero  (d) under vacuum conditions  (e) at a temperature of – 273 °K

Last Answer : Answer : c

The ratio of the weight of a substance to the weight of some standard substance is called?  a. Specific Heat  b. Specific Gravity  c. Isothermal  d. Specific Weight

Description : The ratio of the weight of a substance to the weight of some standard substance is called?  a. Specific Heat  b. Specific Gravity  c. Isothermal  d. Specific Weight

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The mechanical equivalent of heat is  a. joule  b. calorie  c. Btu  d. Specific heat

Description : The mechanical equivalent of heat is  a. joule  b. calorie  c. Btu  d. Specific heat

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What refers to the heat needed to change the temperature of the substances without changing its phases?  a. Latent heat  b. Sensible heat  c. Specific heat  d. entropy

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Is the force of gravity on unit volume?  a. Specific Weight  b. Specific Heat  c. Specific Pressure  d. Specific Volume

Description : Is the force of gravity on unit volume?  a. Specific Weight  b. Specific Heat  c. Specific Pressure  d. Specific Volume

Last Answer : Specific Weight

The volume of a confined gas is held constant, the pressure is directly proportional to the absolute temperature.  a. Charle’s Law  b. Boyle’s Law  c. Joule’s Law  d. Specific Heat

Description : The volume of a confined gas is held constant, the pressure is directly proportional to the absolute temperature.  a. Charle’s Law  b. Boyle’s Law  c. Joule’s Law  d. Specific Heat

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Specific heat capacity in SI unit.  a. kJ / kg.k  b. kJ / kg  c. kN / kg  d. None of the above

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

Sum of the internal energy of a substance and the product of pressure and volume.  a. Specific Heat  b. Specific Gravity  c. Isolated System  d. Enthalpy

Description : Sum of the internal energy of a substance and the product of pressure and volume.  a. Specific Heat  b. Specific Gravity  c. Isolated System  d. Enthalpy

Last Answer : Enthalpy

A system having a rigid boundary that energy, work and mass does not cross its boundaries  a. Specific Heat  b. Specific Gravity  c. Isolated System  d. Enthalpy

Description : A system having a rigid boundary that energy, work and mass does not cross its boundaries  a. Specific Heat  b. Specific Gravity  c. Isolated System  d. Enthalpy

Last Answer : Isolated System

A unit of pressure used in high vacuum technology, which is equal to 1mmhg.  a. specific heat  b. isometric  c. isobaric  d. torr

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Last Answer : torr

The heat per unit mass per degree change in temperature  a. specific heat  b. isometric  c. conservation of energy  d. none of the above

Description : The heat per unit mass per degree change in temperature  a. specific heat  b. isometric  c. conservation of energy  d. none of the above

Last Answer : specific heat

Gas being heated at constant volume is undergoing the process of.  a. isometric  b. specific heat  c. enthalpy  d. isothermal

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Composite property applicable to all fluids  a. Entropy  b. Enthalpy  c. Specific Heat  d. None of the above

Description : Composite property applicable to all fluids  a. Entropy  b. Enthalpy  c. Specific Heat  d. None of the above

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Amount of heat needed to rate the temperature of a substance by 1°C  a. Heat Exchange  b. Heat Engine  c. Specific Heat  d. None of the above

Description : Amount of heat needed to rate the temperature of a substance by 1°C  a. Heat Exchange  b. Heat Engine  c. Specific Heat  d. None of the above

Last Answer : Specific Heat

Specific heat ratio is always  a. > 1  b. < 1  c. = 1  d. none of the above

Description : Specific heat ratio is always  a. > 1  b. < 1  c. = 1  d. none of the above

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The ratio of the change in energy in the form of the heat  a. relative density  b. specific heat  c. specific gravity  d. none of the above

Description : The ratio of the change in energy in the form of the heat  a. relative density  b. specific heat  c. specific gravity  d. none of the above

Last Answer : specific heat