This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: How far above the horizon is the sun on the first day of summer? What will be an ideal ... (Read 64 times)

lb_gilbert

  • Hero Member
  • *****
  • Posts: 588
on: Jul 26, 2018
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
Reply #1 on: Jul 26, 2018
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
Reply #2 on: Jul 26, 2018
Both answers were spot on, thank you once again


coyin

  • Sr. Member
  • ****
  • Posts: 334
Reply #3 on: Jul 26, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

According to the National Institute of Environmental Health Sciences, lung disease is the third leading killer in the United States, responsible for one in seven deaths. It is the leading cause of death among infants under the age of one year.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Did you know?

Oxytocin is recommended only for pregnancies that have a medical reason for inducing labor (such as eclampsia) and is not recommended for elective procedures or for making the birthing process more convenient.

Did you know?

The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Star Map Southern Horizon Star Map Southern Horizon
A sod house in North Dakota, 1896. Individual “bricks” of sod were hewn from the ground and stacked A sod house in North Dakota, 1896. Individual “bricks” of sod were hewn from the ground and stacked
Summer and Winter Solstices Summer and Winter Solstices
The early onset of spring melting and the gradual diminution of summer snowpack The early onset of spring melting and the gradual diminution of summer snowpack
An ice-free summer opens the Arctic for exploration An ice-free summer opens the Arctic for exploration
Video: Interview with an Anorexic Woman (Part 2 of 2)

For a complete list of videos, visit our video library