Answer:
A civil engineering degree program applies mathematics and physical science to solve specific, real-world problems in commerce and industry. A strong civil engineering program typically emphasizes the practical use of geometry, trigonometry, and calculus in conjunction with physics, material science, and chemistry.
Explanation:
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Answer:
21.81 %
Explanation:
given,
$600 up to $800 3
800 up to 1,000 7
$1,000 up to $1,200 11
$1,200 up to $1,400 12
$1,400 up to $1,600 40
$1,600 up to $1,800 24
$1,800 up to $2,000 9
$2,000 up to $2,200 4
Total = 3 + 7 + 11 + 12 + 40 + 24 + 9 + 4 = 110
the frequency of $1,600 to $1800
= 
=21.81 %
Answer:
The smallest wire diameter that can be used is 1 cm
Explanation:
First, we find the smallest diameter using the criterion of maximum normal stress:
Max. Stress = 150 x 10^6 Pa = F/A
150 x 10^6 Pa = 12000 N/(πd²/4)
d² = (12000 N)(4)/(150 x 10^6 Pa)(π)
d = √1.0185 x 10^-4 m²
d = 0.010 m = 1 cm
Now, we find the smallest diameter using the criterion of maximum strain:
Max. Strain = Max. Change in Length/Original Length = 0.025 m/50 m
Max. Strain = 5 x 10^-4 mm/mm
Now,
Max. Strain = Stress/E = (F/A)/E = F/AE
using values:
5 x 10^-4 mm/mm = (12000 N)/(200 x 10^9 Pa)(πd²/4)
d =√(12000 N)(4)/(5 x 0^-4)(200 x 10^9 Pa)(π)
d = 0.012 m = 1.2 cm
Now, by comparison in both cases it can be noted that the smallest value of the diameter is <u>1 cm</u>, which is limited by maximum stress.
Compression ring prevents pressurized refrigerant from blowing past the piston into the crankcase is the false statement.
Answer: Option A
<u>Explanation:</u>
Compression rings seal the combustion chamber from crankcase and then transfer heat to the cylinder from the piston. The piston rings are present in an internal combustion engine or steam engine with multi functions. The functions of piston rings are,
- Ensuring the combustion chamber is tightly sealed as to reduce the loss of gas to crankcase
.
- Promoting heat transfer from the piston to cylinder wall
.
- Controlling engine oil consumption
.
- Optimizing the proper quantity of oil between piston and cylinder wall.
