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Doctors Medicines MCQs Q&A

Select the benefit of preheating the air?

Select the benefit of preheating the air? Correct Answer Increased thermal efficiency

Increased thermal efficiency is one of the benefits and also other benefits are i) Improved combustion ii) Efficient use of low grade fuel iii) Saving in fuel consumption iv) Increased steam generation capacity.

Related Questions

Which of the following benefits are given under the Employees State Insurance Act, 1948? (a) Sickness benefit, maternity benefit. (b) Disablement benefit, dependent benefit. (c) Medical benefit for employee and his dependents. (d) Funeral benefit.
Which of the following can be identified as the main policy objectives of a patent system?
1. To encourage an inventor to disclose an invention by granting exclusive rights over the invention to the inventor.
2. To benefit the public by limiting the scope and term of the exclusive rights granted to an inventor.
3. To benefit the public through encouraging innovation by publishing a full disclosure of the technical details of the invention.
4. To benefit the public through guaranteeing that the inventor can commercialize his/her invention.
Select the correct option.
In MPFI-Air Induction System, the air cleaner, the air flow meter, the throttle body and the air valve supply a proper amount of air to the air intake chamber and intake manifold.
Suppose saturated polar air has an air temperature and dew point of -10o C, and unsaturated desert air has an air temperature of 35o C and a dew point of 10o C. The desert air contains ______ water vapour and has a ________ relative humidity than the polar air.
In Winter, the outside air is cool and hence, the process of air conditioning involves filtering, preheating and _____________
Under which of the following condition(s) are the occluded fronts created? 1. When the front remains stationary 2. When cold air mass moves to warm air mass 3. When warm air mass moves to cold air mass 4. When an air mass is fully lifted above the land surface Select the correct answer using the code given below :
Consider the following statements: 1. The relative humidity of air does not change with temperature as long as specific humidity remains constant. 2. Dew-point temperature is the temperature at which condensation begins when air is cooled at constant volume. 3. Saturated air passing over a water surface does not cause change of air temperature. 4. For saturated air, dry-bulb, wet-bulb and dew-point temperatures are identical. Which of the above statements are correct?
In air-conditioning systems, air may be cooled and dehumidified by 1. Spraying chilled water to air in the form of fine mist. 2. Circulating chilled water or brine in a tube placed across the air flow 3. Placing the evaporator coil across the air flow. Which of the above statements are correct?
In the following question, sentences of a paragraph have been jumbled and labelled as A, B, C and D. You are required to rearrange the jumbled sentences of the paragraph and mark your response accordingly by selecting the correct option. A: Air conditioning is the process of removing heat and moisture from the interior of an occupied space to improve the comfort of occupants. Air conditioning can be used in both domestic and commercial environments.  B: Electric refrigerant-based AC units range from small units that can cool a small bedroom, which can be carried by a single adult, to massive units installed on the roof of office towers that can cool an entire building. C: Air conditioners often use a fan to distribute the conditioned air to an enclosed space such as a building or a car to improve thermal comfort and indoor air quality.  D: This process is most commonly used to achieve a more comfortable interior environment, typically for humans and other animals.
The thermal efficiency of an air/fuel gas preheating recuperator may be as high as __________ percent.