When the shoulder on a grease fitting of a ball joint is flush with the house, the ball joint needs to be replaced
a. true
b. false
a. true
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Find the quotient of a=10101 divided by b=101
What will be an ideal response?
In 1913 a scientist named ____ presented the most accepted theory concerning the structure of an atom.
a. J. J. Thompson b. Niels Bohr c. Isaac Newton d. John Dalton
A) Find the rate at which work is added in the compressor, in kJ/min. B) Find the coefficient of performance of the refrigeration cycle. C) Find the specific enthalpy of the refrigerant when it is a saturated liquid at 300 K. D) All of the work for the compressor is supplied by a Rankine heat engine that has an efficiency of 25%. Find the rate at which heat is removed from the condenser in this Rankine heat engine.
3. A steady state refrigerator operates on the vapor compression cycle. The refrigerant, in the vapor phase, behaves as an ideal gas with CP*=6R, and the specific enthalpy of the compound in saturated liquid and saturated vapor states at 270 K is given in the table below.
• The flow rate of the refrigerant is 100 mol/min.
• The vapor entering the compressor is saturated vapor at 270 K.
• The efficiency of the compressor is 75%.
• The liquid exiting the condenser is saturated liquid at 300 K.
• The mixture exiting the valve is 20% vapor and 80% liquid.
• There is no significant pressure change in either heat exchanger.
The power dissipated in a circuit is often less than ____ watt(s).
A. 1000 B. 100 C. 10 D. 1