Answer:
The efficiency of the ACB radio is 68%.
Explanation:
here is a step-by-step explanation of how to calculate the efficiency of the ACB radio:
Recall that the efficiency of a radio is the ratio of the power delivered to the antenna to the input power, expressed as a percentage.
Identify the given values: we are told that the ACB radio is rated at 7.5 watts, and it delivers 5.1 watts to the antenna.
Plug in the values to the efficiency formula: Efficiency = (Power delivered to the antenna / Input power) x 100%. Using the given values, we get: Efficiency = (5.1 / 7.5) x 100%.
Perform the division: 5.1 divided by 7.5 equals 0.68, or 68% when multiplied by 100%.
Round the answer: The prompt asks for the answer to be rounded to two decimal places, so we get 0.68 rounded to two decimal places is 0.68.
State the answer: The efficiency of the ACB radio is 68%.