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2 years ago

If a generator has 120 volts and 22 amps, how many ohms are needed so the generator will not explode.

Engineering

1 answer:

daser333 [38]2 years ago

7 0

120 volt divided by 22 ampere
= 5.4545454545455 ohm (Ω)
P = V × I
= 120 volt × 22 ampere
= 2640 watt (W)

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A 12-ft circular steel rod with a diameter of 1.5-in is in tension due to a pulling force of 70-lb. Calculate the stress in the

padilas [110]

Answer:

The stress in the rod is 39.11 psi.

Explanation:

The stress due to a pulling force is obtained dividing the pulling force by the the area of the cross section of the rod. The respective area for a cylinder is:

$A=\pi*D^2/4$

Replacing the diameter the area results:

$A= 17.76 in^2$

Therefore the the stress results:

$σ = 70/17.76 lb/in^2 = 39.11 lb/in^2= 39.11 psi$

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2 years ago

A fully braced structural member in a building is subjected to several different loads, including roof loads of D = 5 k and L_r

allochka39001 [22]

Answer: 37.4K

Explanation:

See attachment

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2 years ago

The Energy Losses Associated with Valves and Fittings: a)- are generally associated with a K factor b)- are generally associated

madam [21]

Answer:

a)Are generally associated with factor.

Explanation:

We know that losses are two types

1.Major loss :Due to friction of pipe surface

2.Minor loss :Due to change in the direction of flow

As we know that when any hindrance is produced during the flow of fluid then it leads to generate the energy losses.If flow is along uniform diameter pipe then there will not be any loss but if any valve and fitting placed is the path of fluid flow due to this direction of fluid flow changes and it produce losses in the energy.

Lot' of experimental data tell us that loss in the energy due to valve and fitting are generally associated with K factor.These losses are given as

$Losses=K\dfrac{V^2}{2g}$

8 0

3 years ago

A stream leaving a sewage pond (containing 80 mg/L of sewage) moves as a plug with a velocity of 40 m/hr. A concentration of 50

Leno4ka [110]

Answer:Decay rate constant,k = 0.00376/hr

Explanation:

IsT Order Rate of reaction is given as

In At/ Ao = -Kt

where [A]t is the final concentration at time t and [A]o is the inital concentration at time 0, and k is the first-order rate constant.

Initial concentration = 80 mg/L

Final concentration = 50 mg/L

Velocity = 40 m/hr

Distance= 5000 m

Time taken = Distance / Time

5000m / 40m/hr = 125 hr

In At/ Ao = -Kt

In 50/80 = -Kt

-0.47 = -kt

- K= -0.47 / 125

k = 0.00376

Decay rate constant,k = 0.00376/hr

8 0

2 years ago

Write a program with total change amount as an integer input, and

AURORKA [14]

Answer:

amount = int(input())

#Check if input is less than 1

if amount<=0:

print("No change")

else: #If otherwise

#Convert amount to various coins

dollar = int(amount/100) #Convert to dollar

amount = amount % 100 #Get remainder after conversion

quarter = int(amount/25) #Convert to quarters

amount = amount % 25 #Get remainder after conversion

dime = int(amount/10) #Convert to dimes

amount = amount % 10 #Get remainder after conversion

nickel = int(amount/5) #Convert to nickel

penny = amount % 5 #Get remainder after conversion

#Print results

if dollar >= 1:

if dollar == 1:

print(str(dollar)+" Dollar")

else:

print(str(dollar)+" Dollars")

if quarter >= 1:

if quarter == 1:

print(str(quarter)+" Quarter")

else:

print(str(quarter)+" Quarters")

if dime >= 1:

if dime == 1:

print(str(dime)+" Dime")

else:

print(str(dime)+" Dimes")

if nickel >= 1:

if nickel == 1:

print(str(nickel)+" Nickel")

else:

print(str(nickel)+" Nickels")

if penny >= 1:

if penny == 1:

print(str(penny)+" Penny")

else:

print(str(penny)+" Pennies")

Explanation:

8 0

2 years ago