Answer:
In series:
[tex] \frac{1}{r} = \frac{1}{r_{1} } + \frac{1}{r _{2} } + \frac{1}{r_{3} } [/tex]
[tex] \frac{1}{r} = \frac{1}{4} + \frac{1}{6} + \frac{1}{8} \\ \\ \frac{1}{r} = \frac{13}{24} \\ \\ r = \frac{24}{13} \\ { \underline{r = 1.85 \: Ω}}[/tex]
In parallel:
[tex]r = r _{1} + r _{2} + r _{3} \\ r = 4 + 6 + 8 \\ r = 18Ω[/tex]
Q2
a) Prove that the rotor copper loss of 3-phase induction motor is.
Pr = sP2
where Pr = rotor copper loss
S = slip
P2 = rotor input power
Pm = mechanical power developed by the roto
Answer:
Pr=sP2
Pr=rotor copper loss.
Which of the following defines context?
the ability to find new ways of thinking about a problem
the condition in which a problem exists
the study of the theoretical nature of an event
the problem-solving technique of an engineer
Answer:
The condition in which a problem exists
Explanation:
Context is the situation surrounding information, e.g. if you don't understand a word in a passge you can look for "context clues" where you use surrounding words to infer the meaning of the unknown one
in the metric system what is the prefix for 1000
What are the factors that influence the power input to the compressor?
a) The mass flow of air
b) The pressure ratio of the compressor
c) The inlet temperature
d) Temperature difference between the inlet and outlet
e) The properties of the working medium
Answer:
option e is correct answer
Do you think that the country that has the right to force vaccinations on the community?
Answer:
no
Explanation:
we all have the freedom to choose whether we want to have something injected in our bodies that we aren't sure about. This would be a violation of our constitutional right to force us to take the vaccine.
Calculate the engineering stress in SI units on a bar 25 cm long and having a cross section of 9.00 mm × 4.00 mm that is subjected to a load of 3500 kg.
Answer:
7500kg/mm
Explanation:
