1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Inessa [10]
3 years ago
14

A circuit breaker may need to switch short circuit currents as high as _____ times its rated current.

Physics
1 answer:
son4ous [18]3 years ago
7 0

A circuit breaker may need to switch short circuit currents as high as <u>fifteen (15)</u> times its rated current.

<u>Rated current</u> is basically the<u> maximum limiting current</u>. If the current exceeds its maximum limit, there will be overheating and, in severe circumstances, a <u>short circuit</u> will result.

A<u> circuit breaker</u> is a type of <u>electrical safety</u> device used to guard against short circuit damage to an electrical circuit.

An example of circuit breakers that are most frequently used in low voltage circuits is <u>Miniature Circuit Breakers</u> (MCBs).

These are the switches that automatically turn off when the current in a circuit exceeds the<u> safe limit</u>.

So, to ensure complete protection against <u>short circuits</u> & <u>overloading</u>, a circuit breaker may need to switch short circuit current as high as fifteen times its rated current.

Learn more about short circuit here brainly.com/question/25018411

#SPJ4

You might be interested in
How much heat is needed to melt a 3 kg block of cheddar cheese initially at room tmperature of 24 degrees C? (assume the melting
Mnenie [13.5K]

Cheese I'm so sorry for not having an answer I failed you

8 0
4 years ago
An object becomes positively charged when it
patriot [66]
Loses electron as negative charge is lost therefore becomes overall positive.
4 0
3 years ago
Read 2 more answers
The results of a dart game were precise but not accurate. The accepted value of the game was the center of the dartboard. Which
hoa [83]

Answer:

The darts hit very different areas of the board.

Explanation:

8 0
3 years ago
Read 2 more answers
A rectangular dam is 101 ft long and 54 ft high. If the water is 35 ft deep, find the force of the water on the dam (the density
blsea [12.9K]

To solve this problem we will begin by finding the pressure through density and average depth. Later we will find the Force, by means of the relation of the pressure and the area.

P = \rho h

Here,

h = Depth average

\rho = Density

Moreover,

\text{Density of water}= \rho = 62.4lb/ft^3

Replacing,

P = (62.4lb/ft^3)(\frac{35}{2}ft)

P = 1092 lb/ft^2

Finally the force

\text{Force} = \text{Pressure}\times \text{Area of dam with water acting on it}

F = 1092lb/ft^2(101ft*52ft)

F = 5.735*10^6lbf

6 0
3 years ago
A figure skater skates across a rink of length 50 m in 12.1 seconds. a. What is the average speed of the skater? (2 points) b. I
melamori03 [73]
(a) The skater covers a distance of S=50 m in a time of t=12.1 s, so its average speed is the ratio between the distance covered and the time taken:
v= \frac{S}{t}= \frac{50 m}{12.1 s}=4.13 m/s

(b) The initial speed of the skater is
v_i = 4 m/s
while the final speed is
v_f = 5.3 m/s
and the time taken to accelerate to this velocity is t=2 s, so the acceleration of the skater is given by
a= \frac{v_f - v_i}{t}= \frac{5.3 m/s-4.0 m/s}{2.0 s}=0.65 m/s^2

(c) The initial speed of the skater is 
v_i = 13.0 m/s
while the final speed is 
v_f=0
since she comes to a stop. The distance covered is S=8 m, so we can use the following relationship to find the acceleration of the skater:
2aS=v_f^2 -v_i^2
from which we find
a= \frac{-v_i^2}{2S}= \frac{-(13.0m/s)^2}{2 \cdot 8.0 m}=-10.6 m/s^2
where the negative sign means it is a deceleration.
4 0
4 years ago
Other questions:
  • Traffic officials indicate, it takes longer to ______ when you drive fast.
    12·2 answers
  • If an object were released in space far away from planted or stars and given an initial momentum, describe what would happen to
    9·2 answers
  • A 10N force and a 50N force act in opposite directions on a 4 kg object. What is the acceleration? ( how did you do it )
    13·1 answer
  • The wavelength of light beam B is twice the wavelength of light beam B. The energy of a photon in beam A is:
    6·1 answer
  • How is temperature related to the physical change of a substance?
    9·2 answers
  • Does anyone know how to do this? I don’t and I’m struggling so bad ;; anything helps
    12·1 answer
  • An equiconvex lens has power 4D. what will be the radius OF curvature of each
    13·1 answer
  • Anyone want to talk? whats photosynthesis
    7·2 answers
  • Static electricity is
    13·1 answer
  • 7. What is the acceleration of a 1,300 kg truck with a net force of 5,000 newtons (N)?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!