The main target of the diplexer is to enable the antenna to work at different frequencies. * True
False​

The y form of iron is known as: a) ferrite b) cementite c) perlite d) austenite

The higher the astm grain-size number, the coarser the grain is. a)-true b)-false

Air is compressed isentropically from an initial state of 300 k and 101 kpa to a final temperature of 1000 k. determine the final pressure using the following approaches: (a) approximate analysis (using properties at the average temperature) (b) exact analysis