Related Questions

When the gas is heated at constant pressure, the heat supplied
A Increases the internal energy of the gas
B Increases the temperature of the gas
C Does some external work during expansion
D Both (B) and (C)
When the gas is heated at constant volume, the heat supplied
A Increases the internal energy of the gas and increases the temperature of the gas
B Does some external work during expansion
C Both (A) and (B)
D None of these
According to Regnault's law, the specific heat at constant pressure (cp) and specific heat at constant volume (cv) _________ with the change in pressure and temperature of the gas.
A Change
B Do not change
C Both (A) and (B)
D None of these
The cycle in which heat is supplied at constant volume and rejected at constant pressure is known as
A Dual combustion cycle
B Diesel cycle
C Atkinson cycle
D Rankine cycle
Air is to be heated by condensing steam. Two heat exchangers are available (i) a shell and tube heat exchanger and (ii) a finned tube heat exchanger. Tube side heat transfer area are equal in both the cases. The recommended arrangement is
A Finned tube heat exchanger with air inside and steam outside
B Finned tube heat exchanger with air outside and steam inside
C Shell and tube heat exchanger with air inside tubes and steam on shell side
D Shell and tube heat exchanger with air on shell side and steam inside tubes
STP-তে একটি আদর্শ গ্যাসকে প্রথমে তার প্রাথমিক আয়তনের এক-তৃতীয়াংশে সংকুচিত করা হয়, এবং তারপর প্রসারিত হতে দেওয়া হয় যতক্ষণ না তার চাপ প্রাথমিক চাপের অর্ধেক হয়। উভয় প্রক্রিয়ায় গ্যাসের তাপমাত্রা স্থির থাকে। যদি গ্যাসের প্রাথমিক অভ্যন্তরীণ শক্তি । হয়ে থাকে তাহলে এর চূড়ান্ত অভ্যন্তরীণ শক্তি কত? (An ideal gas at STP is first compressed to one-third of its initial volume and then allowed to expand until its pressure is half the initial pressure. The temperature of the gas remains constant during both the processes. If the initial internal energy of the gas is U, what is its final internal energy?)
A U/3
B U/2
C U
D 2U/3
A process, in which the gas is heated or expanded in such a way that the product of its pressure and volume remains constant , is called
A isothermal process
B adiabatic process
C hyperbolic process
D polytropic process
If a gas is heated against a pressure, keeping the volume constant, then work done will be equal to
A +ve
B -ve
C Zero
D Anywhere between zero and infinity
When a gas is heated at constant pressure
A Its temperature will increase
B Its volume will increase
C Both temperature and volume will increase
D Neither temperature not volume will increase
A process, in which the gas is heated or expanded in such a way that the product of its pressure and volume remains constant, is called
A Isothermal process
B Hyperbolic process
C Adiabatic process
D Polytropic process

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