Answer:
Attached below
Explanation:
a) combustion gases in a cylinder during the power stroke is A closed system
b) Combustion gases in a cylinder during the exhaust stroke is an Open system
c) A balloon exhausting air is an Open system
d) It is a system
e) This is a control volume
Attached below is the sketch of the following situations
Answer:
Answer for the question :
Vehicle counts were made on one direction of a 2-lane roadway three different times last Thursday. The person who made the counts produced the data that appear in the table below for your analysis. Convert the counts in the table into flow rates and average headways for each of the three time periods.
Count ID Start time End time Number of vehicles Flow rate Average time headway
H:M:S H:M:S vph
A. 7:00:00 7:45:00 511
B. 17:06:45 17:33:00 481
C. 14:16:45 14:16:45 249
is in given attachment.
Explanation:
Answer:
Both Technician A and Technician B
Explanation: Both technicians are correct.
Generator Hz comes in because competing frequencies in a machine might cause instability and equipment damage. Thus, option B is correct.
<h3>
What is the role of hertz in the alternator?</h3>
This alternator will produce 30 cycles of voltage in a second if it has two poles. The frequency would thus be defined as 30 cycles per second, or 30 Hertz. The alternator's rotating speed and frequency are directly inversely related.
When compared to a two-pole alternator, a four-pole alternator produces two cycles of voltage in a second (or one hertz of frequency). The number of poles in an alternator has a direct relationship to its frequency.
RPM is a common unit of measurement for engine power (rpm). The ability of an engine to deliver power is indicated by frequency, which is a significant number.
Therefore, Tech B says that hertz is the amount of current flow produced by an alternator.
Learn more about hertz here:
brainly.com/question/16538159
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