Description : The air requirement of a petrol engine during starting compared to the theoretical air requirement for complete combustion is A. more B.unpredictable C. same D. less
Last Answer : ANSWER : D
Description : The area of actual indicator diagram on an air compressor as compared to area of ideal indicator diagram is A. Less B. More C. Same D. Unpredictable
Last Answer : ANSWER : B
Description : The equivalent diameter for the annulus of a double pipe heat exchanger, whose inner pipe has fins on the outside is __________ compared to the same size pipes without fins. (A) More (B) Less (C) Same (D) Unpredictable
Last Answer : (B) Less
Description : In a stabilised soap bubble, pressure inside it compared to external pressure is (A) More (B) Less (C) Same (D) Unpredictable
Last Answer : (A) More
Description : In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is (A) More (B) Less (C) Same (D) Unpredictable; depends on the particular reaction
Last Answer : (C) Same
Description : At equilibrium the concentration of water in vapour phase (C* ) in kg/m3 of air space and the amount of water (m) adsorbed per kg of dry silica gel are related by, C* = 0.0667m. To maintain dry conditions in a room ... which the temperature is maintained constant) is (A) 0.0 (B) 0.2 (C) 0.4 (D) 1.0
Last Answer : (C) 0.4
Description : Humid volume is the total volume in m3 of 1 kg of (A) Vapour laden gas at 1 atm. and room temperature (B) Gas plus its accompanying vapour at 1 atm. and room temperature (C) Gas plus its accompanying vapour at 1 atm. and gas temperature (D) Vapour laden gas at 1 atm. and gas temperature
Last Answer : (C) Gas plus its accompanying vapour at 1 atm. and gas temperature
Description : The specific fuel consumption of a petrol engine compared to diesel engine of same H.P is A. same B.more C. less D. unpredictable
Description : An ideal gas as compared to a real gas at very high pressure occupies (a) more volume (b) less volume (c) same volume (d) unpredictable behaviour (e) no such correlation.
Last Answer : Answer : a
Description : Pick out the wrong statement. (A) The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are the same for NSc = NPr= 1 (B) 1 Nm3 of dry air is lighter ... ) The Lewis number of a mixture is unity, when the thermal diffusivity is equal to the mass diffusivity
Last Answer : (B) 1 Nm3 of dry air is lighter than 1Nm3 of humid air
Description : The Savannah finds its ideal conditions of growth in: (1) mild and humid climate (2) dry summer and wet winter climate (3) hot humid climate with long dry season (4) hot summer and cool winter climate
Last Answer : (3) hot humid climate with long dry season Explanation: Savanna formations find a favourable growth in form of a hot sub-humid tropical climate, a dry season and a rainy season, with an ... either side of the equator on the edges of tropical rainforests. Savannas have warm temperature year round.
Description : Sweet orange requires a. Dry and semi arid conditions b. Dry and sub humid conditions c. Wet and sub humid conditions b. Non of these
Last Answer : Dry and sub humid conditions
Description : The Savannah finds its ideal conditions of growth in : (1) mild and humid climate (2) dry summer and wet winter climate (3) hot humid climate with long dry season (4) hot summer and cool winter climate
Last Answer : hot humid climate with long dry season
Description : The change in evaporator temperature in a refrigeration cycle, as compared to change in condenser temperature, influences the value of C.O.P. (a) more (b) less (c) equally. (d) unpredictable
Last Answer : Ans: a
Description : The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is (a) same (b) more (c) less (d) more or less depending on ambient conditions
Last Answer : Ans: c
Description : To remove all the moisture from a wet solid it requires exposure to __________ air. (A) Perfectly dry (B) Highly humid (C) High temperature (D) None of these
Last Answer : (A) Perfectly dry
Description : During sensible heating of humid air (A) Relative humidity increases (B) Dew point remains constant (C) Dry bulb & wet bulb temperature increases (D) Both 'b' & 'c'
Last Answer : (D) Both 'b' & 'c'
Description : The fuel air ratio in a petrol engine fitted with suction carburetor, operating with dirty air filter as compared to clean filter will be A. higher B. lower C. remain unaffected D. unpredictable
Last Answer : ANSWER : A
Description : The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is (A) Less (B) More (C) Same (D) Dependent on climatic conditions
Last Answer : (A) Less
Description : Capacity & power requirement for an air compressor working at high altitude compared to sea-level will be (A) More (B) Less (C) Same (D) Either more or less; depends on the climatic conditions
Description : Air coolers are more suitable for – (1) hot and humid climate (2) hot and dry climate (3) cool and humid climate (4) cool and dry climate
Last Answer : (2) hot and dry climate Explanation: An air cooler works on the simple principle of evaporation. It does not yield good results when humidity is high. On the contrary, the temperature of dry ... liquid water to water vapor (evaporation), which can cool air using much less energy than refrigeration.
Description : Air coolers are more suitable for (1) hot and humid climate (2) hot and dry climate (3) cool and humid climate (4) cool and dry climate
Last Answer : hot and dry climate
Description : case of condensers & evaporators operating under given terminal conditions, LMTD (logarithmic mean temperature difference) for counter flow as compared to that for parallel flow is (A) More (B) Less (C) Equal (D) Much more
Last Answer : Option C
Description : The intensity of active earth pressure at a depth of 10 metres in dry cohesionless sand with an angle of internal friction of 30° and with a weight of 1.8 t/m3 , is (A) 4 t/m2 (B) 5 t/m2 (C) 6 t/m2 (D) 7 t/m2
Last Answer : Answer: Option C
Description : With increase in the molecular weight of aromatic present in kerosene, its smoking tendency (A) Increases (B) Decreases (C) Remain same (D) Is unpredictable
Last Answer : (A) Increases
Description : With increase in molecular weight of the gas, the head developed by a centrifugal compressor will (A) Decrease (B) Increase (C) Remain same (D) Unpredictable
Last Answer : (A) Decrease
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
Last Answer : Answer: D
Description : IF the demand for products is unpredictable, suppliers must be able to respond quickly to inventory needs. In these cases, ____________ may be a minor consideration when compared with service, dependability, and timeliness. 1. Planning 2. Strategy 3. Objectives 4. Cost 5. Speed
Last Answer : Cost
Description : 2) If the demand for products is unpredictable, suppliers must be able to respond quickly to inventory needs. In these cases, ___________ may be a minor consideration when compared with service, dependability, and timeliness. A)planning B)strategy C)objectives D)cost E)speed
Last Answer : D)cost
Description : For the same terminal conditions and valve size, the pressure drop in a fully opened globe valve as compared to that in a gate valve is (A) More (B) Less (C) Equal (D) Either (A) or (B); depends on the viscosity of the fluid
Description : Volatilisation losses are more in which of the following condition a). Cold b). Warm c). Humid d). Dry
Last Answer : b). Warm
Description : Does ice melt faster in humid conditions (high relative humidity), or low?
Last Answer : Humid air is denser then dry air. The more air molecules that there are surrounding the ice, the more heat exchange will take place over dry air (given a constant air and surface temperature and over a ... air will draw heat from the ice and cause it to melt more quickly than less dense dry air.
Description : In a humid climate (say Haiti), how do I dry out my hiking boots and running shoes?
Last Answer : What about stuffing them with newspaper to soak up any sweat? And hang them up in a dry place so they get aired?
Description : Kanha National Park belongs to which one among the following biogeographical areas in the world? [CDS 2011] (a) Tropical Sub-humid Forests (b) Tropical Humid Forests (c) Tropical Dry Forests (d) Tropical Moist Forests
Last Answer : Ans: (a)
Description : Equatorial regions experience – (1) warm and dry climate (2) hot and humid climate (3) wet and windy climate (4) moderately pleasant climate
Last Answer : (2) hot and humid climate Explanation: The temperature of the equatorial regions is hot throughout the year, with a very low temperature range usually of less than 3 degrees celsius. Tropical rainforest ... ; it is typically hot and wet throughout the year and rainfall is both heavy and frequent.
Description : The production of rubber tree is better adopted to areas where the climate is----- A. Warm and humid (Answer) B. Warm and dry C. Cool and moist D. cool and dry
Last Answer : A. Warm and humid (Answer)
Description : If PE denotes monthly average value of potential evapo–transpiration and R stands for monthly average rainfall, the period having PE/4 greater than or equal to R, is designated as...... (A) Moist (B) Humid (C) Moderately Dry (D) Severe Drought (E) Dry
Last Answer : (C) Moderately Dry
Description : Drip irrigation is useful in which region?1) Humid 2) Dry 3) High rainfall 4) None of these
Last Answer : 2) Dry
Description : There is a greater possibility of occurence of corona during (a) dry weather (b) winter (c) summer heat (d) humid weather (e) none of the above
Last Answer : (d) humid weather
Description : Equatorial regions experience (1) warm and dry climate (2) hot and humid climate (3) wet and windy climate (4) moderately pleasant climate
Last Answer : hot and humid climate
Description : Compressor at high altitude will draw A. More power B. Less power C. Same power D. Unpredictable
Description : The pressure outside a bubble/droplet of liquid is __________ the internal pressure. (A) Greater than (B) Less than (C) Equal to (D) Unpredictable; depends on the bubble size
Last Answer : Option B
Description : If the intake air temperature of Internal combustion engine increases, its efficiency will a. increase b. decrease c.remains same d unpredictable
Last Answer : ANSWER b. decrease
Description : Pick out the wrong statement pertaining to the cooling towers. (A) In case of induced draft cooling tower, the fan is placed at the top of the tower (B) Effectiveness of ... Effectiveness of a mechanical draft cooling tower is reduced with increase in air wet-bulb temperature
Last Answer : (D) Effectiveness of a mechanical draft cooling tower is reduced with increase in air wet-bulb temperature
Description : Pick out the wrong statement (A) Low ozone layer thickness in polar regions is due to cold climatic conditions (B) Amount of unburnt hydrocarbons emitted by two stroke petrol engine is more ... can enter the blood stream & the digestive system/ lungs and is responsible for causing Minamata disease
Last Answer : (D) Mercury as a pollutant can enter the blood stream & the digestive system/ lungs and is responsible for causing Minamata disease
Description : Wet grinding in a revolving mill __________ as compared to dry grinding. (A) Gives less wear on chamber walls (B) Requires more energy (C) Increases capacity (D) Complicates handling of the product
Last Answer : (C) Increases capacity
Description : In case of a revolving mill, wet grinding compared to dry grinding (A) Requires more energy (B) Has less capacity (C) Complicates handling & classification of the product (D) None of these
Last Answer : (D) None of these
Description : The ratio of maximum adiabatic flame temperature in air to that in pure oxygen is always (A) 1 (B) < 1 (C) > 1 (D) Unpredictable
Last Answer : (B) < 1
Description : It takes 6 hours to dry a wet solid from 50% moisture content to the critical moisture content of 15%. How much longer it will take to dry the solid to 10% moisture content, under the same drying conditions? (The ... 5%). (A) 15 min (B) 51 min (C) 71 min (D) 94 min
Last Answer : (C) 71 min
Description : In a laboratory test run, the rate of drying was found to be 0.5 x 10 - 3 kg/m2 .s, when the moisture content reduced from 0.4 to 0.1 on dry basis. The critical moisture content of the material is 0.08 on a dry ... of the solids from 0.3 to 0.2 (dry basis) is (A) 2000 (B) 4000 (C) 5000 (D) 6000
Last Answer : (C) 5000