Related Questions

Which of the following material has nearly zero coefficient of expansion?
A Stainless steel
B High speed steel
C Invar
D Heat resisting steel
For a particular material the Hall coefficient was found to be zero. The material is
A Insulator
B Metal
C Intrinsic semiconductor
D None of the above
The hot resistance of the bulb's filament is higher than its cold resistance because the temperature coefficient of the filament is
A Zero
B Negative
C Positive
D About 2 ohms per degree
Taciturn is most nearly opposite in meaning to -. (Choose the word which is most nearly opposite in meaning to word in capital letters)
A Spoken
B Talkative
C Leisurely
D Placatory
Castigate is most nearly opposite in meaning to- (Choose the word which is most nearly opposite in meaning to word in capital letters)
A Flatten
B Change
C Extol
D None of them
Salute is most nearly opposite in meaning to- (Choose the word which is most nearly opposite in meaning to word in capital letters)
A Espy
B Defame
C Acquire
D Cogitate
Indictment is most nearly opposite in meaning to- (Choose the word which is most nearly opposite in meaning to word in capital letters)
A Eulogy
B Tirade
C Crime
D None of them
Fastidious is most nearly opposite in meaning to- (Choose the word which is most nearly opposite in meaning to word in capital letters)
A Monotonous
B Aloof
C Easygoing
D Interminable
The scales form in heat exchanges after a period of operation and provide additional resistance to heat transfer with some heat transfer coefficient . The reciprocal of this scale heat transfer coefficient is called .
A scaling factor
B forming factor
C resisting factor
D fouling factor
For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because
A Water has a high latent heat of evaporation
B Lewis number is close to unity
C They are always equal under all circumstances
D Solubility of the components of air in water is very small

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