Mechanical Engineering · all questions

Engineering Thermodynamics
practice.

Practice every MCQ with options. Use Show answers when you want the correct option and solution.

368

Questions

15/19

Page

Pick an option on a question to see the right answer and solution.

Q281

If a fluid expands suddenly into vacuum through an orifice of large dimension, then such a process is called

Select an option to see the answer and solution.

Q282

The general gas equation is (where p = Pressure, v = Volume, m = mass, T = Absolute temperature and R = Gas constant)

Select an option to see the answer and solution.

Q283

The heat supplied to the gas at constant volume is (where m = Mass of gas, C_v = Specific heat at constant volume, C_p = Specific heat at constant pressure, T₂ - T₁ = Rise in temperature and R = Gas constant)

Select an option to see the answer and solution.

Q284

Relation between c_p and c_v is given by (where c_p = Specific heat at constant pressure, c_v = Specific heat at constant volume,

γ = \frac{c _{p}}{c _{v}},

known as adiabatic index and R = Gas constant)

Select an option to see the answer and solution.

Q285

Those substances which have so far not been resolved by any means into other substances of simpler form are called

Select an option to see the answer and solution.

Q286

For same compression ratio and for same heat added

Select an option to see the answer and solution.

Q287

The natural solid fuel is

Select an option to see the answer and solution.

Q288

The heat absorbed or rejected by the working substance is given by (where ds = Increase or decrease of entropy, T = Absolute temperature and dQ = Heat absorbed or rejected)

Select an option to see the answer and solution.

Q289

The efficiency of a gas turbine is given by

Select an option to see the answer and solution.

Q290

One kg of carbon monoxide requires __________ kg of oxygen to produce

\frac{11}{7}

kg of carbon dioxide gas.

Select an option to see the answer and solution.

Q291

One kg of carbon monoxide requires _________ kg of oxygen to produce

\frac{11}{7}

kg of carbon dioxide gas.

Select an option to see the answer and solution.

Q292

The heating of a gas at constant pressure is governed by

Select an option to see the answer and solution.

Q293

One reversible heat engine operates between 1600 K and T2 K and another reversible heat engine operates between T2 K and 400 K. If both the engines have the same heat input and output, then temperature T2 is equal to

Select an option to see the answer and solution.

Q294

Charle's law states that all perfect gases change in volume by __________ of its original volume at 0°C for every 1°C change in temperature, when pressure remains constant.

Select an option to see the answer and solution.

Q295

When wood is heated with a limited supply of air to a temperature not less than 280°C, the resulting fuel is

Select an option to see the answer and solution.

Q296

Which of the following cycles is not a reversible cycle?

Select an option to see the answer and solution.

Q297

Which of the following is an irreversible cycle?

Select an option to see the answer and solution.

Q298

In an extensive property of a thermodynamic system

Select an option to see the answer and solution.

Q299

The more effective way of increasing efficiency of Carnot engine is to

Select an option to see the answer and solution.

Q300

The area under the temperature-entropy curve (T – s curve) of any thermodynamic process represents

Select an option to see the answer and solution.

Prev 13 14 15 16 17 Next