Engineering, 11.10.2019 05:30 jalst6084
An oil pump draws 184 hp of electric power while pumping oil with a density of 48 lbm/ft^3 at a rate of 7 ft^3/s. the inlet velocity of the pipe is 5 ft/s and the outlet velocity of the pipe is 2.1 ft/s. if the pressure of oil in the pump is measured to be 70 psi and the motor efficiency is 86%, determine: a) pump power in horsepower b) the mechanical efficiency of the pump c) the combined or overall efficiency of the pump-motor
Answers: 2
Engineering, 04.07.2019 08:10
Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed
Answers: 1
Engineering, 04.07.2019 18:10
Slip occurs via two partial dislocations because of (a) the shorter path of the partial dislocation lines; (b) the lower energy state through partial dislocations; (c) the charge balance.
Answers: 1
Engineering, 04.07.2019 18:10
Which one from below is not one of the reasons of planning failures? (clo3) a)-planner is careless. b-planner spend less time in the field but more time on the desk c)-planner is not qualified d)-planner does not have sufficient time to properly plan
Answers: 3
Engineering, 04.07.2019 19:20
Apreheater involves the use of condensing steam at 100°c on the inside of a bank of tubes to heat air that enters at 1 atm and 25°c. the air moves at 5 m/s in cross flow over the tubes. each tube is 1 m long and has an outside diameter of 10 mm. what is the minimum value of nl needed to achieve an outlet temperature of t 75 c? what is the corresponding pressure drop across the tube bank?
Answers: 3
An oil pump draws 184 hp of electric power while pumping oil with a density of 48 lbm/ft^3 at a rate...
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