Description : A waste heat recovery unit is an energy recovery heat exchanger that transfers heat from process outputs at ........ a) High temperature b) Medium temperature c) Low temperature d) Both a & b
Last Answer : High temperature
Description : The system is suitable to recover heat from ........ temperature exhaust gases . a) Medium-low b) Medium-high c) High-low d) High
Last Answer : Medium-high
Description : In a low to medium temperature waste heat recovery system which of the device is most suitable a) Economiser b) Heat wheels c) air preheater d) Recuperator
Last Answer : Heat wheels
Description : A hydroelectric scheme operating under a head of 80 m will be classified as (A) Low head scheme (B) Medium head scheme (C) High head scheme (D) None of the above
Last Answer : Answer: Option C
Description : Nellore to medium temperature waste heat recovery system the most suitable device is ------ a) Economizer b) Heat wheels c) Air preheater d) Recuperate d) Carbonate
Description : A company is producing 15000 mobiles annually. Determine production scale of company a.Low Production b.Medium Production c.High Production d.None
Last Answer : c.High Production
Description : is not a type of spray a) High volume spray b) Medium volume spray c) Low volume spray d) Ultra low volume spray
Last Answer : Medium volume spray
Description : According to Clausis statement of second law of thermodynamics (a) heat can't be transferred from low temperature source to high temperature source (b) heat can be transferred for low temperature to ... to high temperature source without the aid of external energy (e) all of the above.
Last Answer : Answer : d
Description : Which of the following represents the perpetual motion of the first kind (a) engine with 100% thermal efficiency (b) a fully reversible engine (c) transfer of heat energy from low ... its own energy (e) production of energy by temperature differential in sea water at different levels.
Description : The use of pressurized radiator cap is to a) Reduce evaporation loss b) Increase engine operating temperature c) Increase boiling point of water d) Reduce heat losses
Last Answer : ans c
Description : For a body cooling in a draft, the rate of heat loss is proportional to the difference in temperature between the body and its surroundings. a. Nemst Effect b. Caloric Theory c. Joule’s Law d. Newton’s Law of Cooling
Last Answer : Newton’s Law of Cooling
Description : Traditionally, waste heat of low temperature range ________ has not been used for electricitygeneration despite efforts by ORC companies, mainly because the Carnot efficiency is rather low. a) 0-250 °C b) 0-150 °C c) 0-200 °C d) 0-120 °C
Last Answer : 0-120 °C
Description : Using an organic fluid that boils at a low temperature means that energy could be regeneratedfrom waste fluids is known as ________. a) Heat exchanger b) Heat remover c) Heat pumps d) Heat absorber
Last Answer : Heat pumps
Description : The low temperature reservoir of the heat reservoirs is known as ______. A. Source reservoir B. Heel reservoir C. Toe reservoir D. Sink reservoir
Last Answer : Sink reservoir
Description : Information taken from an existing classified source and generated into another form or medium, such as a video, DVD, or CD is an example of?
Last Answer : Information taken from an existing classified source and generated into another form or medium, such as a video, DVD, or CD is an example of _______ Paraphrasing Extracting Generating Downloading
Description : The main advantage of using worm gears is a.Low power loss b.High velocity ratio c.Ease of manufacture d.Minimum cost e.All of the above
Last Answer : c. Ease of manufacture
Description : Carnot cycle efficiency depends upon (a) properties of the medium/substance used (b) condition of engine (c) working condition (d) temperature range of operation (e) effectiveness of insulating material around the engine.
Description : Dowtherm is a (A) High temperature heating medium (a petroleum product) (B) Product of coal tar distillation (C) Very heat sensitive material (D) None of these
Last Answer : Option A
Description : Energy audit can be classified into the following two types:- I) Preliminary audit. II) Secondary audit. A. Correct. B. Incorrect.
Last Answer : incorrect
Description : Electrical machines having power outputs ranging from a few kW upto approximately 250 kW may be classified as (a) small size machines (b) medium size machines (c) large size machines (d) any ofthe above
Last Answer : (b) medium size machines
Description : Hypothermia occurs due to loss of excessive heat from body due to sudden low body temperature in: (1) Frogs (2) Human beings (3) Lizards (4) Snakes
Last Answer : (2) Human beings Explanation: Normal human body temperature in adults is 34.4-37.8 °C. Sometimes a narrower range is stated, such as 36.5-37.5 °C. Hypothermia is defined as any body temperature below 35.0 °C.
Last Answer : Human beings
Description : In refrigerators, the temperature difference between the evaporating refrigerant and the medium being cooled should be (a) high, of the order of 25° (b) as low as possible (3 to 11°C) (c) zero (d) any value
Last Answer : Ans: b
Description : Viscosity of the cytoplasm increases when temperature is ___________: a. Low b. Medium c. High d. Very High
Last Answer : High
Description : Blast furnace coke is made from coal by (A) Low temperature carbonisation (B) High temperature carbonisation (C) Medium temperature carbonisation (D) Heating the coal in an oven in presence of air
Last Answer : (B) High temperature carbonisation
Description : There is a loss of heat in an irreversible process. A.True B.False
Last Answer : Answer: A
Description : A tractor is an engineering vehicle specifically designed to deliver a high torque at speeds A. High C. Slow B. Extreme High D. Medium
Last Answer : Slow
Description : A high temperature waste heat recovery unit consists of recovering waste heat at temperaturesgreater than _______. a) 200 °C b) 500 °C c) 300 °C d) 400 °C
Last Answer : 400 °C
Description : A waste heat recovery unit (WHRU) is an_________ that transfers heat from process outputs at high temperature to another part of the process for some purpose, usually increased efficiency. a) Energy recovery heat exchanger b) Energy recovery heat diffuser c) Both ‘a’ and ‘b’ d) None of the above
Last Answer : Energy recovery heat exchanger
Description : A manufacturer claims to have a heat engine capable of developing 20 h.p. by receiving heat input of 400 kcal/mt and working between the temperature limits of 227° C and 27° C. His claim is ( ... be possible with lot of sophistications (d) cost will be very high (e) theroretically possible.
Last Answer : Answer : b
Description : In how many ways CNC machine tool systems can be classified? a.2 b.3 c.4 d.5
Last Answer : b.3
Description : Give one example of metal classified as per structure as BCC, FCC, HCP and CCP.
Last Answer : BCC (body centred cubic) structure—Molybdenum FCC (face centred cubic) structure—Aluminium HCP (hexagonal closed packed) structure—Zinc CCP (cubic dosed packed) structure-Copper.
Description : Tillage is normally classified as tillage. A. Primary. C) Primary or secondary B. Secondary. D) Tertiary
Last Answer : Primary or secondary
Description : Tractors can be generally classified by number of or wheels A. Axles C. Single Wheel
Last Answer : Axles
Description : Energy audit can be classified as. a) Preliminary audit. c) Detailed audit. b) Both (a) and (b). d) Only option (a).
Last Answer : Both (a) and (b).
Description : Energy audit can be classified as. a) Preliminary audit. b) Detailed audit. c) Both (a) and (b). d) Only option (a).
Description : Fuels that may classified conveniently in solid, liquid and gaseous. a. Unleaded fuel b. Diesel fuel c. Fossil fuel d. All of the above
Last Answer : Fossil fuel
Description : How are thermodynamic properties classified? A. Physical and chemical B. Intensive and extensive C. Real and imaginary D. Homogeneous and heterogeneous
Last Answer : Intensive and extensive
Description : To what conditions does a gas behave like an ideal gas? a. low temperature and low pressure b. low temperature and high pressure c. high temperature and low pressure d. high temperature and high pressure
Last Answer : high temperature and low pressure
Description : Which is NOT a characteristic of emissivity? A. It is high with most nonmetals B. It is directly proportional to temperature C. It is independent with the surface condition of the material D. It is low with highly polished metals
Last Answer : It is independent with the surface condition of the material
Description : A ______ is a specialized heat exchanger in which air and water are brought into direct contact with each otherin order to reduce the water's temperature. a. Cooling tower b. Heating tower c. Both d. All are wrong
Last Answer : cooling tower
Description : The heat absorbed by a unit mass of a material at its holding point in order to convert the material into a gas at the same temperature. a. Latent Heat of Sublimation b. Latent Heat of Vaporization c. Latent Heat of Fusion d. Latent Heat Of Condensation
Last Answer : Latent Heat of Vaporization
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 : Which of the following is the correct statement of the second law of thermodynamics? A. It is impossible to construct an engine working on a cyclic process, whose sole purpose is to convert heat energy ... energy, which can be obtained from a given quantity of heat energy. D. all of the above
Last Answer : Answer: D
Description : Choose the wrong statement (a) Temperature of medium being cooled must be below that of the evaporator (b) Refrigerant leaves the condenser as liquid (c) All solar thermally operated absorption systems are capable only of intermittent operation (d) frost on evaporator reduces heat transfer
Last Answer : Ans: a
Description : For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it (A) Decreases the pressure drop (B) ... the outlet temperature of cooling medium (C) Increases the overall heat transfer coefficient (D) None of these
Last Answer : (C) Increases the overall heat transfer coefficient
Description : Tom is trying to close a major sale with a customer who is a trout fishing enthusiast. Tom starts reading fishing catalogues and going to sports goods shops to learn as much as he can about fly ... be best classified as _________ involvement. A)low B)high C)enduring D)situational E)perceived
Last Answer : D)situational
Description : Polymers are classified into four categories namely thermosetting, thermoplastic, elastomer and fibre depending upon their (A) Molecular sizes (B) Magnitude of intermolecular forces (C) Resistance to heat (D) Polymerisation mechanism
Last Answer : (B) Magnitude of intermolecular forces
Description : Actual flame temperature is always lower than the adiabatic flame temperature, because there is (A) No possibility of obtaining complete combustion at high temperature (B) Always loss of heat from the flame (C) Both (A) and (B) (D) Neither (A) nor (B)
Last Answer : (C) Both (A) and (B)
Description : The main drawback of supplying more excess air in the combustion of fuel is the (A) Excessive power requirement of air blower (B) Enhanced sensible heat loss in the flue gas (C) Intermittent and uncontrolled combustion of the fuel (D) High exit flue gas temperature from the furnace
Last Answer : (B) Enhanced sensible heat loss in the flue gas