8 What is the average cruising speed of a commercial jet today?
3,500 to 7,000 miles / hour
760 to 3,500 miles/hour
350 to 750 miles/hour
100 to 350 miles / hour

Aquick transition of the operating speed of a shaft from its critical speed will whirl amplitude. (a) increase (b) limit (c) not affect (d) zero

The process in which the system pressure remain constant is called a)-isobaric b)-isochoric c)-isolated d)-isothermal

An electric motor is used to drive a power press which makes steel turning moment diagrams 323 pressings from a metal sheet. the motor runs at a mean speed of 50 rev/s. the torque required is 10.0nm for 0.2s, followed by 1.0nm for0.3 s with this sequence then being repeated. what is the minimum power required of the motor and the moment of incrtia required for the t1ywhcel if the speed fluctuations are to be restricted to 1.5%?