A fin fan exchanger bank with 150 tubes will have how many header plugs?

In a fin fan exchanger bank, the number of header plugs is typically determined by the design of the exchanger and the configuration of the tubes. Each tube in a typical fin fan cooler system is connected to a header at both ends. Therefore, if there are 150 tubes, each tube requires a plug for both its entrance and exit at the headers.

So, for 150 tubes, you would have 150 plugs at one header and another 150 plugs at the opposite header, resulting in a total of 300 header plugs. This is why the correct answer is 300.

Additional options could mislead to higher or lower counts based on incorrect assumptions about the number of plugs needed for each header.