Bissoy.com
Doctors Medicines MCQs Q&A

Related Questions

Consider the following statements (i) If a condensing liquid does not wet a surface, then drop wise condensation will not take place on it (ii) Drop wise condensation gives a higher transfer rate than film wise condensation (iii) Reynolds number of condensing liquid is based on its mass flow rate (iv) Suitable coating or vapor additive is used to promote film wise condensation Identify the correct statement
Heat exchangers are used in A. Condensers and boilers in steam plants B. Radiators C. Intercoolers and preheaters D. Condensers and evaporators in refrigerators and air conditioners
Which are the correct statements? (a) Film condensation usually occur on oily surface. (b) Temperature of condensate gradually increases towards the liquid-vapour interface. (c) Suitable coating is used to promote dropwise condensation. (d) Dropwise condensation gives lower heat transfer rate than film condensation.
Statement 1: Film-type condensation has a higher heat transfer co-efficient than drop-wise condensation. Statement 2: Drop-wise condensation is easier to maintain than Film-type condensation
Are these statements about the gasketed plate-and-frame evaporators true? Statement 1: Gasketed plate-and-frame evaporators are not used for heat sensitive materials. Statement 2: These systems are operated as rising-film, falling-film evaporators.
Identify the correct set.  Set Physical Changes Chemical Changes A Ozone formation from Oxygen, Condensation Rusting, Burning of candle B Evaporation, Alloy formation Rusting, Curd formation C Condensation, Evaporation Combustion, Galvanization D Galvanization, Alloy formation Crystallization, Condensation
The question below, there is a statement followed by two conclusions numbered I and II. You have to assume everything in the statement to be true. Then consider the 2 conclusion together and decide which of them follows beyond a reasonable doubt from the information given in the statement. Statement: High pressure boilers are hazardous pieces of equipment, which are strictly regulated with special laws. Conclusions: I. If not regulated, high pressure boilers will be easily available in the market II. High pressure boilers are rare.
Consider the following statements for fluidized bed boilers: 1. Fluidized bed boilers produce steam from fossil and waste fuels by using a technique called fluidized bed combustion. 2. Cyclone separators are gas cleaning devices that utilize the centrifugal force created by a spinning gas stream to separate particles from a gas. 3. In a pressurized fluidized bed boiler, the combustion process takes place in a pressurized environment resulting in a compact furnace and improved combustion efficiency. Which of the above statements are correct?
Some examples of heat exchanger are (i) Condensers and evaporators in refrigeration units (ii) Evaporator of an ice plant and milk chiller of a pasteurizing plant (iii) Automobile radiators and oil coolers of heat engines Identify the correct answer
Very high pressure boilers are usually __________ boilers.