Description : What is the degree of saturation? A. the ratio of the actual relative humidity to the saturated specific humidity at the same temperature B. the ratio of the actual specific humidity to the ... specific humidity to the actual specific humidity at the same temperature D. none of the above
Last Answer : ANSWER : B
Description : Clapeyron equation is applicable for registration at (a) saturation point of vapour (b) saturation point of liquid (c) sublimation temperature (d) triple point.
Last Answer : Ans: a
Description : The ratio of partial pressure of water vapour in a mixture to the saturation pressure of water at the same temperature of the mixture is called as A. humidity B. partial humidity C. specific humidity D. relative humidity
Last Answer : ANSWER : D
Description : The specific volume on a psychrometric chart: a. Is plotted on vertical lines and read on the horizontal scale at the bottom of the chart b. Is plotted on horizontal lines and read on the vertical ... chart e. Is plotted on vertical lines and read on the horizontal scale at the top of the chart
Last Answer : Answer: D
Description : The specific humidity scale on a psychrometric chart is along the: a. Bottom horizontal axis b. Right side vertical axis c. Top horizontal axis at the top of the chart d. Left saturation line e. Left-side vertical axis and left side
Last Answer : Answer: B
Description : The dry-bulb temperature scale is read on a psychrometric chart along the: a. Left vertical axis b. Right vertical axis c. Saturation line and sloping downward to the right d. Top horizontal axis e. Horizontal axis on the bottom of the chart
Last Answer : ANSWER : E
Description : At any point on the saturation curve in psychometric chart, the dry bulb temperature is always A. less than the corresponding wet bulb temperature B. more than the corresponding wet bulb temperature C. equal to the corresponding wet bulb temperature D. cannot predict
Last Answer : ANSWER : C
Description : Which of the following statement is true? A. the chart is plotted for pressure equal to 760mm Hg B. the constant wbt line represents adiabatic saturation process C. the constant wbt line coincides with constant enthalpy line D. all of the mentioned
Description : The size of inlet valve of an engine in comparison to exhaust valve is A. more B. less C. same D. varies from design to design
Description : The self-ignition temperature of diesel as compared to petrol is a. higher b. lower c. same d. varies
Last Answer : ANSWER a. higher
Description : A compacted soil sample using 10% moisture content has a weight of 200 g and mass unit weight of 2.0 g/cm3 . If the specific gravity of soil particles and water are 2.7 and 1.0, the degree of saturation of the soil is (A) 11.1 % (B) 55.6 % (C) 69.6 % (D) None of these
Last Answer : (B) 55.6 %
Description : Degree of saturation of a natural soil deposit having water content 15%, specific gravity 2.50 and void ratio 0.5, is (A) 50 % (B) 60 % (C) 75 % (D) 80 %
Last Answer : (C) 75 %
Description : Valid range for S, the degree of saturation of soil in percentage is (A) S > 0 (B) S < 0 (C) 0 < S < 100 (D) 0 < S < 100
Last Answer : (D) 0 < S < 100
Description : A partially saturated sample of soil has a unit weight of 2.0 g/cm3 and specific gravity of soil particles is 2.6. If the moisture content in the soil is 20%, the degree of saturation is (A) 20 % (B) 77 % (C) 92 % (D) None of these
Last Answer : Answer: Option C
Description : If voids ratio is 0.67, water content is 0.188 and specific gravity is 2.68, the degree of saturation of the soil, is (A) 25 % (B) 40 % (C) 60 % (D) 75 %
Last Answer : Answer: Option D
Description : The general rule for rating refrigeration systems (excepting for CO2 system) is to approximate following h.p. per ton of Refrigeration (a) 0.1 to 0.5 h.p. per ton of refrigeration (b) 0.5 to 0.8 h.p. per ... (c) 1 to 2 h.p. per ton of refrigeration (d) 2 to 5 h.p. per ton of refrigeration
Last Answer : Ans: c
Description : If a heat pump cycle operates between the condenser temperature of +27°C and evaporator temperature of - 23°C,then the Carnot COP will be (a) 0.2 (b) 1.2 (c) 5 (d) 6
Last Answer : Ans: d
Description : Efficiency of a Carnot engine is given as 80%. If the- cycle direction be reversed, what will be the value of COP ofreversed Carnot cycle (a) 1.25 (b) 0.8 (c) 0.5 (d) 0.25
Description : A refrigeration cycle operates between condenser temperature of + 27°C and evaporator temperature of- 23°C. TheCarnot coefficient of performance of cycle will be (a) 0.2 (b) 1.2 (c) 5 (d) 6
Description : Rating of a domestic refrigerator is of the order of (a) 0.1 ton (b) 5 tons (c) 10 tons (d) 40 tons
Description : The volume of standard air is _____ m3/kg of dry air. a. 0.533 b. 0.633 c. 0.733 d. 0.833 e. 0.933
Description : The specific volume of air is expressed as the volume of: a. 1 kg of air at 101.325 kPa in cm3 b. 0.833 kg of air at standard pressure and temperature in m3 c. 1 kg of air at 101.325 ... d. 1 g of air occupied at any temperature and pressure e. 1 kg of air, regardless of temperature and pressure
Last Answer : Answer: C
Description : A 5 BHP engine running at full load would consume diesel of the order of A. 0.3 kg/hr B. 1 kg/hr C. 3 kg/hr D. 5 kg/hr
Last Answer : ANSWER ; B
Description : In a cycle the spark lasts roughly for A. 1 sec B. 0.1 sec C. 0.0001 sec D.001 sec
Description : The specific fuel consumption for diesel engine is approximately A. 0.15 kg/kWh B. 0.2 kg/kWh C. 28 kg/kWh D. 0.36 kg/kWh
Description : The normal heptane(C7H16) is given a rating of ____________ octane number. a) 0 b) 50 c) 100 d) 120
Last Answer : Answer: a Explanation: None.
Description : An engine produces 10 kW brake power while working with a brake thermal efficiency of 30%. If the calorific value of the fuel used is 40000 kJ/kg, then what is the fuel consumption? (a) 1.5 kg/hour (b) 3 kg/hour (c) 0.3 kg/hour (d) 1 kg/hour
Last Answer : Ans :b
Description : A gas engine has a volume of 300 cc and clearance volume of 25 cc. Its volumetric efficiency is 0.8 and mech efficiency is 0.9. What is the volume of the mixture taken in per stroke? (a) 248 cc (b) 252 cc (c) 264 cc (d) 286 cc
Last Answer : Ans : c
Description : The back pressure of petrol engine is usually a. 1 ata b. 1.2 ata c. 0.8 ata d. 2 ata.
Last Answer : ANSWER b. 1.2 ata
Description : The specific gravity of petrol is about a. 0.65 b. 0.75 c. 0.85 d. 0.95
Last Answer : ANSWER b. 0.75
Description : The specific gravity of diesel oil is a. 1 b. 0.85 c. 0.5 d. 0.7
Last Answer : ANSWER b. 0.85
Description : The specific fuel consumption per BHP hour for petrol engine is approximately a. 0.1 kg b. 0.2 kg c. 0.25 kg d. 0.35 kg
Last Answer : ANSWER c. 0.25 kg
Description : The specific fuel consumption per BHP hour for diesel engine is approximately a. 0.1 kg b. 0.2 kg c. 0.3 kg d. 0.4 kg
Last Answer : ANSWER b. 0.2 kg
Description : In a constant pressure process steam is generated from 10 bar and 0.8 dry condition till it become dry and saturated. Determine amount of heat added per kg of steam. From steam table at 10 bar Tsat = 179.9°C hf = 762.6 kl/kg, hg = 2776.2 kJ/kg
Last Answer : Constant pressure process Final condition of steam is dry saturated Enthalpy of dry steam = hg= hf + hfg =2776.2 KJ/Kg .Given Latent heat of vaporization = hfg = hg - hf =2776.2-762.6 =2013.6 KJ/Kg Initial condition ... hfg = 762.6+0.8 X 2013.6 =2373.48 KJ/Kg Heat added = hg-hw = 402.72 KJ/kg
Description : PROBLEM GThe moist unit weights of the soil are 105.73 pcf and 112.67 pcf, and the respective degree of saturation are 50.0% and 75.0%, compute the values of thevoid ratio, porosity, and specific gravity of the given soil?
Last Answer : Pressuron theory (2013) by Olivier Minazzoli and Aurélien Hees
Description : PROBLEM EA Sample of moist soil has a water content of 20.0% and the moist unit weight of 21.09 KN/cu.meter. The specific gravity of the soil is 2.75. Compute the degree of saturation and the value of porosity?
Last Answer : two seconds
Description : The McCabe ΔL law states that the (A) Molar heats of vaporisation of components are nearly equal (B) Linear crystal growth rate depends on the degree of super-saturation (C) Linear ... does not depend on the crystal size (D) Linear crystal growth rate depends on the crystal size
Last Answer : (C) Linear crystal growth rate does not depend on the crystal size
Description : Crystal size in a continuous crystalliser depends upon the (A) Rate of heat transfer (B) Degree of turbulence (C) Degree of super-saturation (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : A fundamental equation of void ratio (e), specific gravity (G), water content and degree of saturation (Sr ) is (A) e = /Sr (B) = eG/Sr (C) G = /S (D) Sr = /G
Last Answer : (A) e = /Sr
Description : If the degree of saturation of a partially saturated soil is 60%, then air content of the soil is (A) 40 % (B) 60 % (C) 80 % (D) 100 %
Last Answer : (A) 40 %
Description : A moist soil sample of volume 60 cc. weighs 108 g and its dried weight is 86.4 g. If its absolute density is 2.52, the degree of saturation is (A) 54 % (B) 64 % (C) 74 % (D) 84 %
Last Answer : (D) 84 %
Description : The expression [Gs/(1 + Gs )] is used for (A) Dry density (B) Bulk density (C) Degree of saturation (D) Optimum water content
Last Answer : (A) Dry density
Description : The general relationship between specific gravity (G), weight of water ( ), degree of saturation (Sr ), void ratio (e) and bulk density ( ), is (A) = (S - eSr ) /(1 + e) (B) = (G + eSr ) /(1 + e) (C) = (1 + e) /(G + Sr ) (D) = (1 - Sr ) e/(G + Sr )
Last Answer : (B) = (G + eSr ) /(1 + e)
Description : The fundamental equation of air content (ac ), degree of saturation (Sr ) and void ratio (e), is (A) ac = e (1 - Sr )/(1 - e) (B) ac = e (1 + Sr )/(1 + e) (C) ac = e (1 - Sr )/(1 + e) (D) ac = e (1 + Sr )/(1 - e)
Last Answer : (C) ac = e (1 - Sr )/(1 + e)
Description : The ratio of the volume of water present in a given soil mass to the total volume of its voids, is known (A) Porosity (B) Void ratio (C) Percentage voids (D) Degree of saturation
Description : When the degree of saturation is zero, the soil mass under consideration represents (A) One phase system (B) Two phase system with soil and air (C) Two phase system with soil and water (D) Three phase system
Last Answer : Answer: Option B
Description : A soil sample of mass specific gravity 1.92 has moisture content 30%. If the specific gravity of solids is 2.75, the degree of saturation, is (A) 95.4 % (B) 95.5 % (C) 95.6 % (D) 95.7 %
Last Answer : Option D
Description : If water content of a soil is 40%, G is 2.70 and void ratio is 1.35, the degree of saturation is (A) 70 % (B) 75 % (C) 80 % (D) 85 %
Description : The natural water content of the soil sample was found to be 40%, specific gravity is 2.7 and void ratio 1.2; then the degree of saturation of the soil will be (a) 100% (b) 69% (c) 87% (d) 90%
Last Answer : (d) 90%
Description : In regard to colour, what does Chroma stand for, A. Degree of saturation of hue B. Brightness C. Value D. Contrast
Last Answer : A. Degree of saturation of hue