1) Characteristic of a system represented by a numerical value A) compressed liq
ID: 1584065 • Letter: 1
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1) Characteristic of a system represented by a numerical value A) compressed liquid 2) A process that obeys PV" const. 3) A unit for measuring pressure 4) Mass can flow in or out through its boundary 5)A unit for measuring power 6) Separates the system from its surroundings B) potential energy C) quality D) BTU/h E) property F) boundary G) superheated vapor l) energy J) kinetic energy K) closed system 7) Specifies the amount of vapor in a mixture 8) Has a larger volume than its saturation state 9)A form of energy transfer 10) A type of energy that depends on the motion of the system S stropic The following questions are multiple choice or fill in the blanks, circle the correct answer, etc. )work M) polytropic N) PS O) open system P) Newton Q) state R) process T) adiabatic Which of the following choices is correct for the specific volume v of a highly compressed liquid? a) v> v A pressure gage reads 0.2 bar vacuum while the atmospheric pressure is 1 bar; the absolute d) v=v' e) v ~v, 12) pressure is: a) 0.8 bar If the combustion inside a piston-cylinder cause the gases inside to expand, then the work b) 1.2 bar c) 0.2 bar d) -0.2 bar e) 1.0 bar 13) produced is considered: a) conduction b) negative c) neutral d) positive e) compressive 14 What is the potential energy in ft-lbf of an object of mass 32.2 lbm, if the acceleration due to gravity is standard and the object is 1 ft above the datum plane?Explanation / Answer
1) State
2) Adiabatic
3) PSI
4)
5) kWh
6) boundary
7)
8) compressed liquid
9)polytropic
10) Kinetic Energy
11) C
12) absolute pressure = gauge pressure + atmospheric pressure = 0.2+1 = 1.2 bar, option B
13) option E
14)option :C , potential energy = mgh = 32.2 * 32.17405*1=1036 ft-lbf
15) efficiency = output / input,
input = output/ efficiency = 1/0.5 = 2 MW
option: C
16) option A
17) option :B Cv = 5 / 5*2 = 0.5
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