TOP MCQ
APPLIED THERMODYNAMICS OBJECTIVE TYPES QUESTIONS WITH ANSWERS.
Here may be a list of Top MCQ of Applied Thermodynamics Objective Type Questions And Answers provided for the AKTU and ALL OTHER UNIVERSITIES EXAMINATIONS . All the MCQ questions are most vital for AKTU especially. These sort of Objective questions are going to be asked in Diploma and Degree Internal Examinations.
1. the connection
between cp and cv is given by the subsequent equation (where cp = heat at
constant pressure, cv = heat at
constant volume, γ = cp / cv, referred to as adiabatic index, R = Gas
constant).
(A) cv / cp = R
(B) cp-cv = R
(C) cv = R / γ-1
(D)Both (B) and (C)
2. The cycle
consisting of 2 const. pressure process and 2 isentropic process is understood
as follows:
(A) Carnot cycle
(B) Stirling cycle
(C) Otto cycle
(D) None of those
3. The relative
atomic mass of sulfur is
(A) 12
(B) 14
(C) 16
(D) 32
4. The efficiency of
the Carnot cycle
(A) Temperature limit
(B) Pressure ratio
(C) Volume compression ratio
(D) Cutoff ratio and compression ratio
5. within the Otto
cycle, the Otto cycle efficiency is above the diesel cycle efficiency at an
equivalent compression ratio and
warmth input.
(A) Combustion may be a constant amount
(B) Expansion and compression are isentropic
(C) High maximum temperature
(D) Low heat exhaust rate
6. the worth of Hg of
1mm is
(A) 1.333 N / m2
(B) 13.33 N / m2
(C) 133.3 N / m2
(D) 1333 N / m2
7. Carbonization of
coal
(A) Dry coal to form fine powder
(B) Molding finely ground coal struggling with or without binding material
(C) Heat wood to a temperature of 280 ° C or higher with a limited supply of air
(D) Neither of the above
8. the world under
the temperature-entropy curve (T-s curve) of the thermodynamic process is
(A) Absorbed heat
(B) The fever was rejected
(C) Either (A) or (B)
(D) None of those
9.1 Joules (J) is
adequate to
(A) 1 N-m
(B) 1 kN-m
(C) 10 N-m / s
(D) 10 kN-m / s
10. consistent with
the primary law of thermodynamics
(A) the entire internal energy of the system during the method remains constant
(B) the entire energy of the system
remains constant
(C) The work done by the system is adequate to the warmth transferred by the system
(D) Internal energy, enthalpy and entropy during the method remain constant
11. When wood is heated to temperatures above 280 ° C with a limited supply of air, the resulting fuel is:
(A) Coke
(B) Charcoal
(C) soft coal
(D) Charcoal
12. the warmth energy
stored within the gas and wont to raise the temperature of the gas is
(A) External energy
(B) Internal energy
(C) K.E.
(D) Molecular energy
13. Which of the
subsequent explanations is incorrect?
(A) The closed cycle turbine plant is an external combustion plant.
(B) In closed cycle gas turbines,
the pressure range depends on air pressure .
(C) Because the closed cycle has an outer surface, the advantages of an efficient combustion engine are lost.
(D) In open cycle gas turbines, the atmosphere acts as a sink and doesn't require coolant.
14. The temperature
at which the quantity of gas become 0?
(A) Kelvin scale of temperature
(B) temperature
(C) temperature
(D) None of those
15. 1 kg of ethylene
(C2H4) requires 2 kg of oxygen, producing 22/7 kg of CO2 and a cloth kg of
water or steam.
(A) 9/7
(B) 11/7
(C) 7/4
(D) 11/4
16. consistent with Legnaud's law, the precise heat at a continuing pressure (cp) and therefore the heat at a continuing volume (cv) with changes in pressure and cooling .
(A)change
(B) don't change
(C) Both (A) and (B)
(D) None of those
17. Which of the subsequent is correct?
(A) Absolute pressure = gauge
pressure + air pressure
(B) Gauge pressure = absolute pressure + air pressure
(C) air pressure = absolute pressure + gauge pressure
(D) Absolute pressure = gauge pressure-atmospheric pressure
18. the overall gas energy equation is as follows (where Q1-2 = heat supplied, dU = change in internal energy, and W1-2 = work wiped out units of heat):
(A) Q1-2 = dU + W1-2
(B) Q1-2 = dU-W1-2
(C) Q1-2 = dU / W1-2
(D) Q1-2 = dU × W1-2
19. Natural solid fuel
(A)wood
(B) Coke
(C) Anthracite
(D) Fine pulverized coal
20. In a perfect turbine plant, the compression and expansion processes are assumed as follows:
(A) Isothermal
(B) Isentropic
(C) Polytrope
(D) None of those
21. Natural petroleum could also be separated as follows
(A) Gasoline
(B) Kerosene
(C) heating oil
(D) grease
22. consistent with the statement of Kelvin-Planck's Second Law of Thermodynamics
(A) it's impossible to create an
engine that operates during a cyclic process whose sole purpose is to convert thermal energy into work.
(B) it's possible to create an engine that operates during a cyclic process whose sole purpose is to convert thermal energy into work.
(C) it's impossible to create a tool that operates during a circulation process and has no effect aside from heat transfer from the cold body to the recent body.
(D) Neither of the above
23. The pressure exerted by a perfect gas is that the to think about the K.E. of all molecules contained during a unit volume of gas.
(A) Half
(B) One-third
(C) Two-thirds
(D) Three-quarters
24. Changes occur when the gas is heated
(A) Pressure
(B) Volume
(C) Temperature
(D) All of those
25. The properties of the agonist that increase or decrease when heat is reversibly supplied or removed are referred to as follows.
(A) Enthalpy
(B) Internal energy
(C) Entropy
(D) External energy
26. the most fuel utilized in steam boilers is
(A) Lignite
(B) Peat
(C) soft coal coke
(D) Non-viscous soft coal
27. the warmth absorbed or rejected by the agonist is given by the subsequent equation (where ds = increase or decrease in entropy, T = temperature , dQ = heat absorbed or rejected):
(A) δQ = T.ds
(B) δQ = T / ds
(C) dQ = ds / T
(D) None of those
28. The universal gas constant (R) is
(A) Total of two specific heats
(B) Difference between the 2
specific heats
(C) Product of two specific heats
(D) Ratio of two specific heats
29. the method of heating or expanding a gas in order that the merchandise of pressure and volume remains constant is called:
(A) Isothermal process
(B) Hyperbolic process
(C) Insulation process
(D) Polytropic process
30. The efficiency of the double combustion cycle at an equivalent compression ratio is a little more diesel cycle.
(A)Greater than
(B)Less than
(C) Equal
(D) None of those
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