This topic contains a solution. Click here to go to the answer

Author Question: How far above the horizon is the sun on the first day of summer? What will be an ideal ... (Read 53 times)

lb_gilbert

  • Hero Member
  • *****
  • Posts: 588
How far above the horizon is the sun on the first day of summer?
 
  What will be an ideal response?

Question 2

A certain installation requires 36 V and at least 2 kW of rated power. Describe the configuration using 36-cell modules, where each module produces 12 V and 4 A.
 
  What will be an ideal response?



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

coyin

  • Sr. Member
  • ****
  • Posts: 334
Answer to Question 1

On the first day of summer, the sun is at the latitude of the observer plus 23.4o at noon.

Answer to Question 2

For three series modules:

VTOT = (3 modules)(12 V/module) = 36 V

ITOT = PTOT/VTOT = 2 kW/36 V = 55.6 A total current to obtain 2 kW out. Number of 3 series modules in parallel = 55.6 A/4 A = 14 groups
The configuration consists of 14 groups in parallel; each group has 3 series modules for a total of 42 modules.



lb_gilbert

  • Hero Member
  • *****
  • Posts: 588
Both answers were spot on, thank you once again



coyin

  • Sr. Member
  • ****
  • Posts: 334

 

Did you know?

Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Did you know?

According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.

Did you know?

Limit intake of red meat and dairy products made with whole milk. Choose skim milk, low-fat or fat-free dairy products. Limit fried food. Use healthy oils when cooking.

Did you know?

Medication errors are three times higher among children and infants than with adults.

Did you know?

The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.

For a complete list of videos, visit our video library