For an evaporator coil to transfer the maximum amount of heat, _____.

For an evaporator coil to transfer the maximum amount of heat, _____.
 
  a. the fin spacing should be very wide
  b. all of the surface area inside the tubes needs to be covered in flashing liquid
  c. the coil temperature should always be higher than the dew point of the air
  d. the subcooling of the entering refrigerant should be kept to a minimum

 Q. 2

How much power is consumed by a circuit with a 120V source that draws 18A through a resistive load?
 
  a. 6.7 watts
  b. 6.7 ohms
  c. 2,160 watts
  d. 0.15 ohms

 Q. 3

A temperature of 20C is equal to what temperature on the Fahrenheit scale?
 
  a. 36F
  b. 41F
  c. 68F
  d. 100F