Starting the vehicle's engine and listening to its operation can

An electric winch operates on 140 volts [V] and draws 6 amperes [A] of current. The winch has an efficiency of 64%. The winch

Elis [28]

Answer:

Explanation:

efficiency = (energy output / energy input)

energy input = ivt where i is current = 6 A, v is volts = 140 and t time = 11 seconds

energy input = 6 × 140 × 11 = 9240 J

energy output = 0.64 × 9240 = 5913.6 J

510 pound-force = 2268.593 N

at height h, potential energy = mgh = 5913.6 J

2268.593 × h = 5913.6

h = 5913.6 / ( 2268.593) = 2.61 m

3 0

3 years ago

Is it possible that two types of dislocation coexist. a)-True b)- False

Svetlanka [38]

Answer:

yes it is possible

Explanation:

dislocation are if two type edge and screw dislocations

edge dislocation is a defect where an extra half plane is inside the lattice.

and screw dislocation is one in which can be assumed as the first half of the crystal slips over another.

These dislocation can coexist together where the line direction and burger vectors are neither parallel nor perpendicular then at that condition both dislocation screw and edge will coexist

3 0

3 years ago

Calculate the number of 12 V batteries (capacity 120 Ah) needed to run a 3 kW DC motor that operates in 240 V. How many hours th

Mrac [35]

Answer:

20 batteries
9.6 hours

Explanation:

To obtain 240 V from 12 V batteries they must be connected in series. The number needed is ...

240/12 = 20 . . . batteries needed

__

The current draw will be ...

(3000 W)/(240 V) = 12.5 A

Then the time available from the battery stack is ...

(120 Ah)/(12.5 A) = 9.6 h

The motor can run 9.6 hours from the series connection.

3 0

3 years ago

Write a function called largest3 which takes 3 numbers as parameters and returns the largest of the 3. Write a program which tak

tamaranim1 [39]

Answer:

The solution code is written in Python.

def largest3(num1, num2, num3):
largest = num1
if(largest < num2):
largest = num2
if(largest < num3):
largest = num3
return largest
first_num = int(input("Enter first number: "))
second_num = int(input("Enter second number: "))
third_num = int(input("Enter third number: "))
largest_number = largest3(first_num, second_num, third_num)
print("The largest number is " + str(largest_number))

Explanation:

Create function largest3

Firstly, we can create a function largest3 which take 3 numbers (num1, num2, num3) as input. (Line 1).
Please note Python uses keyword def to denote a function. The code from Line 2 - 10 are function body of largest3.
Within the function body, create a variable, largest, to store the largest number. In the first beginning, just tentatively assign num1 to largest. (Line 2)
Next, proceed to check if the current "largest" value smaller than the num2 (Line 4). If so, replace the original value of largest variable with num2 (Line 5).
Repeat the similar comparison procedure to num3 (Line 7-8)
At the end, return the final value of "largest" as output

Get User Input

Prompt use input for three numbers (Line 13 -15) using Python built-in input function.
Please note the input parts of codes is done outside of the function largest3.

Call function to get largest number and display

We can simply call the function largest by writing the function name largest and passing the three user input into the parenthesis as arguments. (Line 17)
The function largest will operate on the three arguments and return the output to the variable largest_number.
Lastly, print the output using Python built-in print function. (Line 18)
Please note the output parts of codes is also done outside of the function largest3.

6 0

3 years ago

Air initially at 15 psla and 60 F is compressed to 75 psia and 400 F. The power input to air under steady state condition is 5 h

Triss [41]

Answer: $\dot{m}=3.46lbm/min$