Answer:
Required Diameter = 302.65 inches
Explanation:
We are given;
Allowable tensile stress = 60 ksi
Weight of tensile load = 24,000 lb
Elongation = 0.05 in
Original length = 18 in
We'll need to check the diameters under stress and strain.
Now, we know that the formula for stress is;
Stress = Force/Area
Thus,
Area = Force/stress
So for this stress, area required is;
A_req = 24000/60 = 4000 in²
So let's find the required diameter here.
Area = πd²/4
So, 4000 = πd²/4
(4000 x 4)/π = d²
d² = 5092.96
Required diameter here is;
d = √5092.96
d = 71.36 in
For Strain;
Formula for strain is;
Strain = stress/E
We are given E = 120 ksi
stress = P/A = 24,000/A
strain = elongation/original length = 0.05/18 = 0.00278
Thus;
0.00278 = P/(A•E)
0.00278 = 24000/(120 x A)
Making A the subject to obtain;
A = 24000/(120 x 0.00278)
A_required = 71942 in²
Area = πd²/4
So, 71942 = πd²/4
(71942 x 4)/π = d²
d² = 91599.4
Required diameter here is;
d = √91599.4
d = 302.65 in
The larger diameter is 302.65 inchesand it's therefore the required one.
Answer:
D. A and B
Explanation:
1. The method Console.Write() is an overloaded method in a language like C#.
One of its variations could be as follows;
<em>Console.Write(String format, Object a, Object b).</em>
This contains three parameters and will write the text representation of the specified objects to the standard output stream using the information specified by the format specifier. Parameter 1 is <em>format</em> which is a composite format string representing the format specifier. Parameter 2 is <em>a</em>, which is the first object to be written using <em>format. </em>Parameter 3 is b, which is the second object to be written using <em>format</em>.
2. The method Console.WriteLine() has the same characteristics as Console.Write() above, except that it writes the text representation of the specified objects, followed by current line terminator then to the standard output stream using the information specified by the format specifier.
3. Console.WriteFormat() does not exist, at least not in C# or .NET
Therefore, Console.Write() and Console.WriteLine() have the capacity to display formatted data.
<em>Hope this helps!</em>
Answer:
2.83 kg
Explanation:
Given:
Volume, V = 0.8 m³
gage pressure, P = 200 kPa
Absolute pressure = gage pressure + Atmospheric pressure
= 200 + 101 = 301 kPa = 301 × 10³ N/m²
Temperature, T = 23° C = 23 + 273 = 296 K
Now,
From the ideal gas equation
PV = mRT
Where,
m is the mass
R is the ideal gas constant = 287 J/Kg K. (for air)
thus,
301 × 10³ × 0.8 = m × 287 × 296
or
m = 2.83 kg
One
When you convert a whole number into a fraction, you put the whole number as the numerator and the denominator as 1.
Such as 12=12/1 or 5=5/1
Answer:
The maximum power dissipation of the zener diode 112mV.
Explanation:
The minimum zener current should be:
5 * Iza= 5 * 1= 5 mA.
Since the load current can be at maximum 15 mA, we should select R so that, IL= 15 mA.
A zener current of 5 mA is available, Thus the current should be 20 mA, which leads to,
R = 
= 470 Ω.
Maximum power dissipated in the diode occours when, IL=0 is
Pmax = 20 * 
* 5.6 = 112mV.
