Baublysiz
2021-11-21
An oil pump is drawing 44 kW of electric power while pumping oil with ρ= 860 kg/m^3 at a rate of 0.1 m^3/s. The inlet and outlet diameters of the piper are 8 cm and 12 cm, respectively. If the pressure rise of oil in the pump is measured to be 500 kPa and the motor efficiency is 90 percent, determine the mechanical efficiency of the pump.
menerkupvd
Beginner2021-11-22Added 12 answers
First we calculate the mechanical point power output from the efficienty relation:
This serves as the power input for the mechanical efficiency. The output is obtained from the rates of the changes of the mechanical energy:
Finally, the mechanical efficiency is:
Jeffrey Jordon
Expert2023-05-09Added 2605 answers
Nick Camelot
Skilled2023-06-11Added 164 answers
Mr Solver
Skilled2023-06-11Added 147 answers
Eliza Beth13
Skilled2023-06-11Added 130 answers
Materials which do not allow electric current to flow through them is known as
What do you mean by power rating of an electrical appliance? How to use it to calculate (a) the resistance of the appliance, and (b) the safe limit of current in it, while in use?
What is the difference between charge and energy? Are they interrelated
If a light burns out in a parallel circuit, what happens to other lights that may be connected and why?
The device which is used to measure electric current through a circuit is called a/an ____.
Ammeter
Voltmeter
Ohmmeter
Wattmeter
Does higher Ohms mean more Resistance?
What factors does the resistance of a conductor depend on?
Define one coulomb charge.
State Ohm's law. Draw a labelled circuit diagram to verify this law in the laboratory. Draw a V-I graph for the same and explain how would you use this graph to determine the resistance of the conductor.
The rate of flow of charges is known as
1) Electric potential
2) Electric conductance
3) Electric current
4) None of these.
If the distance between two charges is doubled, what will happen the force between the charges?
Give differences between ohmic and non-ohmic conductors.
A thick wire has smaller resistance while a thin wire has larger resistance. True or False
Which metals is the best conductors of electricity?
A)Nickel;
B)Silver;
C)Gold;
D)Sodium
How to find the exact value of using the half angle formula?