Thermodynamics: An Engineering Approach
8th Edition
ISBN: 9780073398174
Author: Yunus A. Cengel Dr., Michael A. Boles
Publisher: McGraw-Hill Education
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Chapter 16.6, Problem 28P
To determine
The equilibrium composition of the mixture at high temperature of 2000 Kand the constant pressure of 2 atm.
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20
3.
2-233
2520
Тр
Gears
1079
A pair of helical gears consist of a 20 teeth pinion meshing with a 100 teeth gear. The pinion rotates at
Ta
720 r.p.m. The normal pressure angle is 20° while the helix angle is 25°. The face width is 40 mm and
the normal module is 4 mm. The pinion as well as gear are made of steel having ultimate strength of
600 MPa and heat treated to a surface hardness of 300 B.H.N. The service factor and factor of safety
are 1.5 and 2 respectively. Assume that the velocity factor accounts for the dynamic load and calculate
the power transmitting capacity of the gears.
[Ans. 8.6 kW
4. A single stage helical gear reducer is to receive power from a 1440 r.p.m., 25 kW induction motor. The
gear tooth profile is involute full depth with 20° normal pressure angle. The helix angle is 23°,
number of teeth on pinion is 20 and the gear ratio is 3. Both the gears are made of steel with allowable
beam stress of 90 MPa and hardness 250 B.H.N.
(a) Design the gears for 20% overload carrying capacity from standpoint of bending strength and
wear,
(b) If the incremental dynamic load of 8 kN is estimated in tangential plane, what will be the safe
power transmitted by the pair at the same speed?
Determine the stress in each section of the bar shown in Fig. when subjected to an
axial tensile load shown in Fig. The central section is 30 mm hollow square cross-
section; the other portions are of circular section, their diameters being indicated
What will be the total deformation of the bar? For the bar material E = 210GPa.
20mi
О
30mm
30mmm
2.6
15mm
30kN
1
2
10kN
- 20kN
3
-329 91mm
100mm
371mm
Chapter 16 Solutions
Thermodynamics: An Engineering Approach
Ch. 16.6 - Write three different KPrelations for reacting...Ch. 16.6 - A reaction chamber contains a mixture of CO2, CO,...Ch. 16.6 - A reaction chamber contains a mixture of N2and N...Ch. 16.6 - A reaction chamber contains a mixture of CO2, CO,...Ch. 16.6 - Which element is more likely to dissociate into...Ch. 16.6 - Prob. 6PCh. 16.6 - Prob. 7PCh. 16.6 - Prob. 8PCh. 16.6 - Prob. 9PCh. 16.6 - Prob. 10P
Ch. 16.6 - Prob. 11PCh. 16.6 - 16–12 Determine the temperature at which 5 percent...Ch. 16.6 - 16–12 Determine the temperature at which 5 percent...Ch. 16.6 - Prob. 14PCh. 16.6 - Prob. 15PCh. 16.6 - Prob. 16PCh. 16.6 - Prob. 17PCh. 16.6 - Prob. 18PCh. 16.6 - Prob. 19PCh. 16.6 - Prob. 20PCh. 16.6 - Prob. 21PCh. 16.6 - Determine the equilibrium constant KP for the...Ch. 16.6 - Prob. 24PCh. 16.6 - Carbon monoxide is burned with 100 percent excess...Ch. 16.6 - Prob. 27PCh. 16.6 - Prob. 28PCh. 16.6 - Prob. 29PCh. 16.6 - Prob. 30PCh. 16.6 - Prob. 31PCh. 16.6 - A mixture of 3 mol of N2, 1 mol of O2, and 0.1 mol...Ch. 16.6 - Prob. 33PCh. 16.6 - Prob. 34PCh. 16.6 - Prob. 35PCh. 16.6 - Prob. 37PCh. 16.6 - Estimate KP for the following equilibrium reaction...Ch. 16.6 - Prob. 40PCh. 16.6 - What is the equilibrium criterion for systems that...Ch. 16.6 - Prob. 42PCh. 16.6 - Prob. 43PCh. 16.6 - Prob. 44PCh. 16.6 - Prob. 48PCh. 16.6 - Prob. 51PCh. 16.6 - Prob. 52PCh. 16.6 - Prob. 53PCh. 16.6 - Prob. 54PCh. 16.6 - Prob. 55PCh. 16.6 - Prob. 56PCh. 16.6 - Prob. 57PCh. 16.6 - Prob. 59PCh. 16.6 - Prob. 60PCh. 16.6 - Prob. 61PCh. 16.6 - Prob. 62PCh. 16.6 - Using the Henrys constant data for a gas dissolved...Ch. 16.6 - Prob. 65PCh. 16.6 - Prob. 66PCh. 16.6 - Prob. 67PCh. 16.6 - Prob. 68PCh. 16.6 - Prob. 69PCh. 16.6 - Prob. 70PCh. 16.6 - Prob. 71PCh. 16.6 - Prob. 72PCh. 16.6 - An oxygennitrogen mixture consists of 30 kg of...Ch. 16.6 - Prob. 74PCh. 16.6 - Prob. 75PCh. 16.6 - Prob. 76PCh. 16.6 - Prob. 77PCh. 16.6 - An ammoniawater absorption refrigeration unit...Ch. 16.6 - Prob. 79PCh. 16.6 - Prob. 81PCh. 16.6 - Prob. 82PCh. 16.6 - Prob. 83RPCh. 16.6 - Prob. 84RPCh. 16.6 - Prob. 85RPCh. 16.6 - Consider a glass of water in a room at 25C and 100...Ch. 16.6 - Prob. 87RPCh. 16.6 - 16–90 Propane gas is burned steadily at 1 atm...Ch. 16.6 - Prob. 91RPCh. 16.6 - Prob. 92RPCh. 16.6 - Prob. 93RPCh. 16.6 - Prob. 94RPCh. 16.6 - Prob. 95RPCh. 16.6 - A constant-volume tank contains a mixture of 1 mol...Ch. 16.6 - Prob. 101RPCh. 16.6 - Prob. 103RPCh. 16.6 - Prob. 104RPCh. 16.6 - Prob. 107RPCh. 16.6 - Prob. 108RPCh. 16.6 - Prob. 109FEPCh. 16.6 - Prob. 110FEPCh. 16.6 - Prob. 111FEPCh. 16.6 - Prob. 112FEPCh. 16.6 - Prob. 113FEPCh. 16.6 - Prob. 114FEPCh. 16.6 - Propane C3H8 is burned with air, and the...Ch. 16.6 - Prob. 116FEPCh. 16.6 - Prob. 117FEPCh. 16.6 - The solubility of nitrogen gas in rubber at 25C is...
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