Thermal pollution due to excessive heat & temperature in the working place causes (A) Reduction in working efficiency of manpower (B) Fatigue (C) High breathing rate (D) All (A), (B) & (C)

Thermal pollution due to excessive heat & temperature in the working
place causes
(A) Reduction in working efficiency of manpower
(B) Fatigue
(C) High breathing rate
(D) All (A), (B) & (C)
by

1 Answer

Answer :

(D) All (A), (B) & (C)
by

Related questions

A man exposed to excessive noise level in the working environment may suffer from (A) Hearing loss (B) Rupture of ear drum (C) Nervousness & fatigue (D) All (A), (B) & (C)

Description : A man exposed to excessive noise level in the working environment may suffer from (A) Hearing loss (B) Rupture of ear drum (C) Nervousness & fatigue (D) All (A), (B) & (C)

Last Answer : (D) All (A), (B) & (C)

Major advantage of waste heat recovery in industry is: a) Reduction in pollution b) increase in efficiency c) Both a & b d) none of the above

Description : Major advantage of waste heat recovery in industry is: a) Reduction in pollution b) increase in efficiency c) Both a & b d) none of the above

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Heat balance of furnace provides means of determining the (A) Thermal efficiency of the process (B) Sources of heat losses (C) Scope of reduction of heat losses(D) All (A), (B) and (C)

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A major advantage of waste heat recovery in industry is a) Reduction in pollution c) Increase efficiency d) None of the above

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The outlet temperature of cooling water in a heat exchanger is generally not allowed to exceed above 50°C in industrial practice mainly to avoid (A) Its evaporation loss (B) Excessive corrosion (C) Uneconomic LMTD (D) Decrease in heat exchanger efficiency

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Arsenic concentration has been on an increase in the ground water of certain areas in Bihar and West Bengal due to: 1. acid rain 2. excessive pumping of ground water 3. industrial pollution 4. leaching of agricultural land The correct causes may be: (a) 1 and 2 only (b) 1, 3 and 4 only (c) 1, 2, 3 and 4 (d) 1, 2 and 3 only

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Last Answer : (C) Creep resistance

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reduction in thermal resistance during heat transfer does not occur in the (A) Convection heat transfer by stirring the fluid and cleaning the heating surface (B) Conduction heat transfer by reduction in the material thickness and increase in the thermal conductivity (C) Radiation heat transfer by increasing the temperature and reducing the emissivity (D) None of these

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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 temperature source to high temperature source  (d) a machine that continuously creates its own energy  (e) production of energy by temperature differential in sea water at different levels.

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The heat recoverable from flue gases of furnaces depends on the (A) Thermal efficiency of furnace (B) Quantity of flue gases (C) Flue gas temperature drop through the furnace (D) All (A), (B) and (C)

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Last Answer : (D) All (A), (B) and (C)

Smaller tension ratio result in.... (a) Unnecessary high tension in belt (b) Reduction in belt life (c) Both (c) & (b) (d) Excessive belt slippage

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Last Answer : (c) Both (c) & (b)

When assessing the older adult, the nurse anticipates increase in which of the follow components of respiratory status? a) Residual lung volume As a result, patient experience fatigue and breathlessness with sustained activity. b) Vital capacity The nurse anticipates decreased vital capacity. c) Gas exchange and diffusing capacity The nurse anticipates decreased gas exchange and diffusing capacity resulting in impaired healing of tissues due to decreased oxygenation. d) Cough efficiency The nurse anticipates difficulty coughing up secretions due to decreased cough efficiency.

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Last Answer : a) Residual lung volume As a result, patient experience fatigue and breathlessness with sustained activity.

Which is not accomplished in an underfired furnace? (A) Increase in heating capacity/m2 of floor space (B) Elimination of cold spot at the bottom of the charge (C) Reduction in the temperature of furnace gases (D) Protection of the periphery of the charge from excessive radiation

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Last Answer : (A) Increase in heating capacity/m2 of floor space

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'October Heat' is caused due to (a) the absence of rain (b) combination of high temperature and excessive humidity (c) dry hot weather (d) None of the above

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The product of efficiency & heat transferred to the working fluid is? a. Net temperature change b. Net work done c. Net enthalpy change d. None of the mentioned

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Is my sleeping pill regimen responsible for this excessive fatigue?

Description : Is my sleeping pill regimen responsible for this excessive fatigue?

Last Answer : Yes, it could be responsible for it. Sleeping pills will often exacerbate sleeping disorders especially if you have obstructive sleep apnea.

Excessive sweating in the body , resulting in a lot of fatigue in the body, what to do in this case ?

Description : Excessive sweating in the body , resulting in a lot of fatigue in the body, what to do in this case ?

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Sodium depletion occurs in excessive sweating, and cannot be corrected by drinking water alone. When uncorrected, it may lead to A. Increase of urea in blood B. Swelling of ankles and feet C. Muscle cramps, loss of energy, fatigue and faintness D. Renal failure

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Last Answer : ANSWER: C

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While Normal Carburizing And Nit Riding Surface Treatments Increase Fatigue Strength, Excessive Treatment May Decrease The Fatigue Strength. Why?

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The economiser is used in boilers to........ A]Increase thermal efficiency of boiler B]Economise on fuel C]Extract heat from the exhaust the gases D]Increase flue gas temperature

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Last Answer : A]Increase thermal efficiency of boiler

What is the highest efficiency of heat engine operating between the two thermal energy reservoirs at temperature limits?  A. Ericson efficiency  B. Otto efficiency  C. Carnot efficiency  D. Stirling efficiency

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Pick up the correct statements from the following: (A) Cracks appear on the plastered surface in the form of hair cracks (B) In brick work, the efflorescence is removed by applying a solution of zinc sulphate and water (C) Excessive thermal variations in the backing or plaster causes the plaster to fall (D) All the above

Description : Pick up the correct statements from the following: (A) Cracks appear on the plastered surface in the form of hair cracks (B) In brick work, the efflorescence is removed by applying a solution ... Excessive thermal variations in the backing or plaster causes the plaster to fall (D) All the above

Last Answer : Answer: Option D

High sulphur content in a fuel __________ of the flue gases. (A) Decreases the dew point (B) Increases the dew point (C) Reduces the combustion efficiency by limiting the permissible temperature reduction (D) Both (B) and (C)

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Last Answer : (D) Both (B) and (C)

Hydrofining is the most recent and effective method for the (A) Removal of sulphur (B) Improvement of smoke point (C) Reduction of breathing loss (D) Improvement of viscosity index

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Pick out the wrong statement. (A) The toughness of a material decreases, when it is heated (B) Crane hooks are normally made of wrought iron (C) Cold working of a metal decreases its fatigue strength (D) The temperature at which new grains are formed in a metal is known as the recrystallisation temperature

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Last Answer : (C) Cold working of a metal decreases its fatigue strength

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Last Answer : (A) Two temperatures only

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

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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

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Last Answer : Human beings

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

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

The thermal efficiency of a reversible heat engine operating between two given thermal reservoirs is 0.4. The device is used either as a refrigerator or as a heat pump between the same reservoirs. Then the coefficient of performance as a refrigerator (COP)R and the co-efficient of performance as a heat pump (COP)HP are (A) (COP)R = (COP)HP = 0.6 (B) (COP)R = 2.5; (COP)HP = 1.5 (C) (COP)R = 1.5; (COP)HP = 2.5 (D) (COP)R = (COP)HP = 2.5

Description : The thermal efficiency of a reversible heat engine operating between two given thermal reservoirs is 0.4. The device is used either as a refrigerator or as a heat pump between the same reservoirs. Then the coefficient of performance as a ... )R = 1.5; (COP)HP = 2.5 (D) (COP)R = (COP)HP = 2.5

Last Answer : (C) (COP)R = 1.5; (COP)HP = 2.5

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Last Answer : (D) All (A), (B) and (C

High rate of heating of coke ovens (A) May damage its walls due to abrupt excessive swelling of coal (B) Produces larger size coke (C) Increases the time of carbonisation (D) None of these

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Last Answer : (A) May damage its walls due to abrupt excessive swelling of coal

Heat transfer occurs by natural convection because change in temperature causes difference in (A) Viscosity (B) Density (C) Thermal conductivity (D) Heat capacity

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Last Answer : (B) Density

Benefits of Waste Heat Recovery a. Reduction in pollution b. Reduction in equipment sizes c. Reduction in auxiliary energy consumption d. All of the above

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Last Answer : Ans:- d. All of the above

Chrome vanadium steels usually contain 0.8 to 1.1% Cr, 0.25 to 0.35% C and < 0.25% V. It is (A) Used for making axle & shafts of aeroplanes, automobiles and locomotives (B) Having poor fatigue resistance (C) Having poor toughness (D) Not helpful in producing cleaner steel due to oxidising action of vanadium

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Last Answer : (A) Used for making axle & shafts of aeroplanes, automobiles and locomotives

Thermal pollution of water increases its toxicity and oxidation of oxygen demanding waste besides favouring bacterial growth. A rise in water temperature by 10°C, doubles the toxic effects of __________ present in it. (A) Coal ash (B) Potassium cyanide (C) Ortho-xylene (D) None of these

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The reason for excessive clinker formation in gas producers is the (A) Use of coal/coke containing a high % of fines and ash (B) Use of fuel having too low an ash fusion temperature (C) Development of hot spots in the fuel bed and an abnormally high rate of gasification (D) All (A), (B) and (C)

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Last Answer : (D) All (A), (B) and (C)

In a furnace, the heat taken by the charge/stock and the heat lost to the furnace structure & flue gases depends on the (A) Rate of firing and emissivity of flame (B) Thermal conductivity of the charge & structural materials of furnace (C) Nature of process; whether batch, continuous or intermittent (D) All (A), (B) and (C)

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Last Answer : (D) All (A), (B) and (C)

310- Larger tension ratio result in... (a) Unnecessary high tension in belt (b) Reduction in belt life (c) Excessive belt slippage (d) Increase belt life

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Extended heat transfer surface like fins are used to increase the heat transfer rate. Fin efficiency is defined as the ratio of heat transferred across the fin surface to the theoretical heat transfer across an equal area held at the (A) Surrounding temperature (B) Average temperature of the fin (C) Temperature of the fin end (D) Constant temperature equal to that of the base

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Breathing loss" on storage of gasoline occurs due to the (A) Presence of unsaturated air (B) Fluctuation of ambient temperature during day and night (C) Both (A) and (B) (D) Neither (A) nor (B)

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Last Answer : (B) Preparing production schedule