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

Author Question: A transformer is to be designed to increase the 30 kV (rms) output of a generator to the ... (Read 36 times)

lunatika

  • Hero Member
  • *****
  • Posts: 548
on: Jul 28, 2018
A transformer is to be designed to increase the 30 kV (rms) output of a generator to the transmission line voltage of 345 kV (rms). If the primary winding has 60 turns, how many turns must the secondary have?
 a. 57
  c. 690
  b. 6900
  d. 11

Question 2

A sound intensity of 70 dB is observed at a distance d from the source of sound. What sound intensity would be observed at a distance 2d from the source?
 a. 68 dB
  c. 64 dB
  b. 67 dB
  d. 62 dB


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Tonyam972

  • Sr. Member
  • ****
  • Posts: 342
Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

C


lunatika

  • Member
  • Posts: 548
Reply 2 on: Jul 28, 2018
YES! Correct, THANKS for helping me on my review

  • Member
  • Posts:
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

The human body's pharmacokinetics are quite varied. Our hair holds onto drugs longer than our urine, blood, or saliva. For example, alcohol can be detected in the hair for up to 90 days after it was consumed. The same is true for marijuana, cocaine, ecstasy, heroin, methamphetamine, and nicotine.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

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?

Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.

Cardiac Output Cardiac Output
Atmospheric pressure decreases with increase in altitude. Atmospheric pressure decreases with increase in altitude.
When the exhaust is lean, the output of a zirconia oxygen sensor is below 450 mV. When the exhaust is lean, the output of a zirconia oxygen sensor is below 450 mV.
A typical camshaft-driven high-pressure pump used to increase fuel pressure to 2,000 PSI or higher. A typical camshaft-driven high-pressure pump used to increase fuel pressure to 2,000 PSI or higher.
The major cortical input and output pathways of the dorsolateral prefrontal association cortex. ... The major cortical input and output pathways of the dorsolateral prefrontal association cortex. ...
Extracorporeal shock-wave lithotripsy. Acoustic shock waves generated by the shock-wave generator ... Extracorporeal shock-wave lithotripsy. Acoustic shock waves generated by the shock-wave generator ...
Video: Energy Flow - Trophic Levels and Food

For a complete list of videos, visit our video library