Description : The difference between the absolute pressure and the atmospheric pressure is called the _____ pressure. A. Gage B. Normal C. Standard D. Vacuum
Last Answer : Gage
Description : What is the pressure below atmospheric pressure called? A. Gage pressure B. Absolute pressure C. Atmospheric pressure D. Vacuum pressure
Last Answer : Vacuum pressure
Description : A pressure gage registers 50 psig in a region where the barometer is 14.25 psia. Find absolute pressure in psia, Pa. (Formula; p = patm+ pg) a. 433 kPa b. 443 kPa c. 343 kPa d. None of the above
Last Answer : 443 kPa
Description : _________is the partial pressure of water vapor at the existing temperature divided by the equilibrium vapor pressure of water at the existing temperature. a. vacuum pressure b. relative humidity c. absolute pressure d. vapor pressure
Last Answer : relative humidity
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 : A vacuum is connected to a tank reads 3kpa at a location w/ the barametric pressure reading is 75mmhg. Determined the P absolute in the tank a. 70.658 kpa b. 68 kpa c. 58.78 kap d. None of the above Pabs = Patm – Pvacuum
Last Answer : 70.658 kpa
Description : The condition of perfect vacuum, i.e., absolute zero pressure can be attained at (a) a temperature of – 273.16°C (b) a temperature of 0°C (c) a temperature of 273 °K (d) a negative pressure and 0°C temperature (e) can’t be attained.
Last Answer : Answer : a
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
Description : Which of the following is correct? A. Absolute pressure = Gauge pressure + Atmospheric pressure B. Gauge pressure = Absolute pressure + Atmospheric pressure C. Atmospheric pressure = Absolute pressure + Gauge pressure D. Absolute pressure = Gauge pressure – Atmospheric pressure
Last Answer : Answer: A
Description : What pressure measuring device consists of a coiled hollow tube that tends to straighten out when the tube is subjected to an internal pressure? A. Aneroid B. Manometer C. Bourdon pressure gage D. Barometer
Last Answer : Bourdon pressure gage
Description : Manometers measure the __________ pressure. (A) Vacuum as well as the atmospheric (B) Difference in (C) Absolute (D) Gage
Last Answer : (B) Difference in
Description : Is define as the ratio of the actual pressure of the vapor a. Relative Humidity b. Humidity Ratio c. Dew Point d. Adiabatic Saturation
Last Answer : Relative Humidity
Description : Working principle of manometer comprises of balancing a coloumn of liquid against the pressure to be measured. Inclined tube manometer is especially used for the measurement of __________ pressure. (A) Small differential (B) Atmospheric (C) Absolute (D) Gage
Last Answer : (A) Small differential
Description : The absolute pressure of a given mass of a perfect gas varies inversely as its volume, when the temperature remains constant. This statement is known as Charles’ law. A. Yes B. No
Last Answer : Answer: B
Description : According to Gay-Lussac law, the absolute pressure of a given mass of a perfect gas varies __________ as its absolute temperature, when the volume remains constant. A. directly B. indirectly
Description : According to Gay-Lussac law for a perfect gas, the absolute pressure of given mass varies directly as (a) temperature (b) absolute (c) absolute temperature, if volume is kept constant ... , if temperature is kept constant (e) remains constant,if volume and temperature are kept constant.
Description : ____________is the difference between the saturation temperature for the given pressure and the actual sub cooled liquid temperature. a) Degrees of Superheat, °SH b) Degrees of Sub cooled, °SB c) Both a and b d) None of the above
Last Answer : Degrees of Sub cooled, °SB
Description : The state of a thermodynamic system is always defined by its: a. Absolute temperature b. process c. properties d. temperature and pressure
Last Answer : properties
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
Last Answer : Boyle’s Law
Description : The pressure of the confined gas is held constant, the volume directly proportional to the absolute temperature. a. Charle’s Law b. Boyle’s Law c. Zeroth Law d. Gas Law
Last Answer : Charle’s Law
Description : Instrument used to measure the absolute pressure of the atmosphere a. galvanometer b. thermometer c. barometer d. pressure gages
Last Answer : barometer
Description : “If the temperature o f a fixed quantity of a gas is held constant during a change of state, the volume varies inversely with the absolute pressure. a. Charle’s Law b. Boyle’s Law c. Dalton’s Law d. Amagat’s Law
Description : The gas in a constant gas thermometer cooled to absolute zero would have _________. a. no volume b. no pressure c. zero temperature at all scales d. none of the above
Last Answer : no pressure
Description : For a perfect gas, according to Boyle’s law (where p = Absolute pressure, v = Volume, and T = Absolute temperature) A. p v = constant, if T is kept constant B. v/T = constant, if p is kept constant C. p/T = constant, if v is kept constant D. T/p = constant, if v is kept constant
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.
Description : A unit of pressure used in high vacuum technology, which is equal to 1mmhg. a. specific heat b. isometric c. isobaric d. torr
Last Answer : torr
Description : No liquid can exist as liquid at (a) – 273 °K (b) vacuum (c) zero pressure (d) centre of earth (e) in space.
Description : Occurs when the vapor pressure equals the atmospheric pressure a. Boiling b. Melting c. Freezing d. Vaporizing
Last Answer : Boiling
Description : What is the temperature when water and vapor are in equilibrium with the atmospheric pressure? a. Ice point b. Steam point c. Critical point d. Freezing point
Last Answer : Steam point
Description : What is the temperature when water and vapor are in the equilibrium with the atmospheric pressure? a. Ice point b. Steam point c. Critical point d. Freezing point
Description : The standard reference atmospheric pressure a. 760 mmHg b. 1 atm c. 14.696 psia d. All of the above
Last Answer : All of the above
Description : A _______ is used to measure atmospheric pressure. a. Thermometer b. Barometer c. Manometer d. None of the above
Last Answer : Barometer
Description : While swimming at depth of120m in a fresh water lake, A fish emits an air bubbles of volume 2.0mm³ atmospheric pressure is 100kPa. What is the pressure of the bubble? a) 217.7 kPa b) 317.7 kPa c) 417.7 kPa d) 517.7 kPa Formula: P= δh
Last Answer : 217.7 kPa
Description : The volume of a gas under standard atmospheric pressure & 76 cmHg is 200m³. What is the volume when pressure is 80 cmHg if the temperature is unchanged? a) 180 in³ b) 170 in³ c) 160 in³ d) 190 in³ Formula: P2V2 = P1V1
Last Answer : 190 in³
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
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
Description : While swimming a depth of 13m in a fresh water lake a fish emits an air bubble of volume 2 mm² atmospheric pressure is 100kpa what is the original pressure of the bubble. a. 217.17 kpa b. 119 kpa c. 326.15 kpa d. 210 kap Pabs = Pg + Patm
Last Answer : 217.17 kpa
Description : What type of pressure cannot be used for Boyle’s Law? a. Atmospheric Pressure b. Gauge Pressure c. Surface Pressure d. Isobaric Pressure
Last Answer : Gauge Pressure
Description : Water boils when: A. Its saturated vapor pressure equals to the atmospheric pressure B. Its vapor pressure equals 76cm of mercury C. Its temperature reaches 212 degree Celsius D. Its vapor pressure is 1 gram per sq. cm
Last Answer : Its saturated vapor pressure equals to the atmospheric pressure
Description : What instrument is used to measure atmospheric pressure? A. Pitot tube B. Wind vane C. Barometer D. Manometer
Description : Which of the following is NOT a value of the standard atmospheric pressure? A. 1 bar B. 1 atm C. 1 kgf/cm^2 D. 14.223 psi
Last Answer : 14.223 psi
Description : One barometric pressure or 1 atmospheric pressure is equal to (a) 1 kgf/cnr2 (b) 1.033 kgf/cm2 (c) 0 kgf/cm2 (d) 1.0197 kgf/cm2 (e) 100 kgf/cm2.
Last Answer : Answer : b
Description : Water contained in a beaker can be made to boil by passing steam through it (a) at atmospheric pressure (b) at a pressure below the firuosphejric pressure (c) at a pressure greater than atmospheric pressure (d) any pressure (e) not possible.
Description : For which of the following substances, the gas laws can be used with minimum error (a) dry steam (b) wet steam (c) saturated steam (d) superheated steam (e) steam at atmospheric pressure.
Last Answer : Answer : d
Description : According to Dalton's law, the total pres sure of the mixture of gases is equal to (a) greater of the partial pressures of all (b) average of the partial pressures of all (c) sum ... all (d) sum of the partial pressures of all divided by average molecular weight (e) atmospheric pressure.
Description : _____________ is the difference between the actual temperature of superheated vapor and the saturation temperature for the existing pressure. a) Degrees of Superheat, °SH b) Degrees of Sub cooled, °SB c) Both a and b d) None of the above
Last Answer : Degrees of Superheat, °SH
Description : Pick out the wrong statement. (A) In a static mass of liquid, the pressure at a point is the same for all liquids (B) Pressure decreases exponentially with elevation in an isothermal atmosphere (C) ... s law, the pressure at a point in a static or uniformly moving fluid is equal in all directions
Last Answer : (A) In a static mass of liquid, the pressure at a point is the same for all liquids
Description : _________ is the temperature to which the air must be cooled, at constant pressure, to produce saturation. a. relative humidity b. triple point temperature c. dew point d. critical point
Last Answer : dew point
Description : On a day when the partial pressure of water vapor remains constant, what happens as the temperature rises? a. the relative humidity increases b. the relative humidity decreases c. the relative humidity remains constant d. the air would eventually become saturated
Last Answer : the relative humidity decreases
Description : The temperatures of the ideal gas temperature scale are measured by using a ______. A. Constant-volume gas thermometer B. Constant-mass gas thermometer C. Constant-temperature gas thermometer D. Constant-pressure gas thermometer
Last Answer : Constant-volume gas thermometer