If a properly operating, conventional heat pump system is operating in the heating mode with an outside ambient temperature of $30F,$ which of the following is the most likely outside ambient temperature?

A$.-10F$

B$.10F$

C$.25F$

D$.35F$

Which of the following statements is true regarding the coefficient of performance $($COP$)$ of a heat pump system?

A$.$ As the compression ratio increases, the efficiency of the system increases.

B$.$ As the heat of compression $($HOC$)$ increases, the efficiency of the system decreases.

C$.$ As the compression ratio increases, the heat of compression $($HOC$)$ decreases.

D$.$ As the heat of compression decreases, the compression ratio increases.

The coefficient of performance $($COP$)$ of electric strip heaters is closest to

A$.1$:$1.$

B$.2$:$1.$

C$.3$:$1.$

D$.4$:$1.$

What system conditions are likely to be observed if the heat pump's A$-$coil is located downstream of the electric strip heaters?

A$.$ High operating pressures

B$.$ Low operating pressures

C$.$ High suction pressure and low discharge pressure

D$.$ Low suction pressure and high discharge pressure

Which of the following is true regarding the discharge air temperature of a heat pump system operating in firststage heating?

A$.$ The discharge air temperature is higher than that of an oil$-$fired heating system, but lower than that of a gas$-$fired heating system.

B$.$ The discharge air temperature is higher than that of a gas$-$fired heating system, but lower than that of an oil$-$fired heating system.

C$.$ The discharge air temperature is higher than that of both an oil$-$fired heating system and a gas$-$fired heating system.

D$.$ The discharge air temperature is lower than that of both an oil$-$fired heating system and a gas$-$fired heating system,

An air$-$to$-$air heat pump operating in the heating mode might experience which of the following if it is installed in an area that is near a lake or other body of water?

A$.$ Higher than normal suction pressure

B$.$ Higher than normal discharge pressure

C$.$ Excessive ice buildup on the outdoor coil

D$.$ Shortened defrost cycles