Answer:
a) T=41.25 in-lb
b) Resulting stress=6493.5 lb/in^2
Explanation:
a) The torque is:
where C is the torque coefficient, F the force and D is 3/8. Replacing:
b) The area is:
The resulting stress is:
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Answer:
We will see a waveform displayed on the screen and it will be PWM(pulse width modulation) of sinusoidal wave,this wave should have a frequency of 14KHz and it will form a vibration spectrum.
Answer:
(d) all of the above
Explanation:
before cutting the screw threads the operator should lubricate all of the machine parts given in the option that is lead screw and gearbox , the ways and the cross slide and the carriage and half-nuts. we should use lubrication because it reduces the overall system friction and if friction is reduced then heat generated due to friction is also decreases which is beneficial
so option (D) will be correct because we need lubricate in all the given parts