AUTOMATIC TRANS...-CLASSRM.+SHOP MANUAL
7th Edition
ISBN: 9781337792158
Author: ERJAVEC
Publisher: CENGAGE L
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Chapter 22, Problem 3SA
Signals can have varying voltage levels.
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Explain why on the interval 0<x<1000 mm and 1000<x<2000mm, Mt is equal to positive 160 Nm, but at x= 0mm and x=1000mm Mt is equal to -160 Nm (negative value!). What is the reason for the sign change of Mt?
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?
Chapter 22 Solutions
AUTOMATIC TRANS...-CLASSRM.+SHOP MANUAL
Ch. 22 - Explain the three types of memory used in the...Ch. 22 - Signals resemble a square pattern.Ch. 22 - Signals can have varying voltage levels.Ch. 22 - Means that data concerning the effects of the...Ch. 22 - The type of memory' that contains specific...Ch. 22 - A is the simplest type of semiconductor.Ch. 22 - Prob. 7SACh. 22 - Prob. 8SACh. 22 - How should vou test a diode with a multimeter?Ch. 22 - What is the name of the module that allows the...
Ch. 22 - What is the major difference between ROM and RAM...Ch. 22 - True or False? In a high-speed CAN system, a...Ch. 22 - True or False? In a high-speed CAN system, a...Ch. 22 - Which of the following is not made of...Ch. 22 - Which of the following is a basic function of a...Ch. 22 - Prob. 1ASRQCh. 22 - While checking an A/C compressor clutch coil...Ch. 22 - Technician A says that some types of voltage...Ch. 22 - Technician A says that multiplexing is a way to...Ch. 22 - Technician A says that when a diode is placed in a...Ch. 22 - Prob. 6ASRQCh. 22 - While discussing multiplex system protocols:...Ch. 22 - Prob. 8ASRQCh. 22 - While diagnosing a network communication failure:...Ch. 22 - Prob. 10ASRQ
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