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
Akimi4 [234]
3 years ago
12

A power electronics package has been designed to handle 400W of power dissipation. Find out the change in output power handling

capability of the power electronics package when efficiency is increased from 89% to 94%. Discuss briefly the importance of efficiency base on output power capability calculated.
Physics
1 answer:
shtirl [24]3 years ago
6 0

Answer:

Explanation:

First we must find the real power that is dissipating for each of the two cases, this is achieved by multiplying the nominal power by the efficiency

P=Poη

P=power

Po=nominal power

η=efficiency

POWER NUMBER 1

P1=400*0.89=356W

POWER NUMBER 2

P2=400*0.94=376W

then we find the power change by subtracting both results

ΔP=P2-P1=376-356=20W

always ensure that the efficiency in any system is maximized, because it is always required that the amount of energy delivered by the system is maximum with the same input power.

You might be interested in
An electron that has moved from the outer energy levels towards the inner energy levels of an atom is said to be in a ground sta
IRISSAK [1]
I think it’s true....
7 0
2 years ago
A 10 gauge copper wire carries a current of 20 A. Assuming one free electron per copper atom, calculate the magnitude of the dri
nordsb [41]

Complete Question

A 10 gauge copper wire carries a current of 20 A. Assuming one free electron per copper atom, calculate the drift velocity of the electrons. (The cross-sectional area of a 10-gauge wire is 5.261 mm2.) mm/s

Answer:

The drift velocity is v  = 0.0002808 \ m/s

Explanation:

From the question we are told that

    The current on the copper is  I  = 20 \ A

     The cross-sectional area is  A =  5.261 \ mm^2 =  5.261 *10^{-6} \ m^2

The number of copper atom in the wire is  mathematically evaluated

      n  =  \frac{\rho *  N_a}Z}

Where \rho is the density of copper with a value \rho =  8.93 \ g/m^3

          N_a is the Avogadro's number with a value N_a  = 6.02 *10^{23}\ atom/mol

         Z  is the molar mass of copper with a value  Z =  63.55 \ g/mol

So

     n  =  \frac{8.93 * 6.02 *10^{23}}{63.55}

     n  = 8.46 * 10^{28}  \  atoms /m^3

Given the 1 atom is equivalent to 1 free electron then the number of free electron is  

         N  = 8.46 * 10^{28}  \  electrons

The current through the wire is mathematically represented as

         I  =  N * e * v * A

substituting values

        20 =  8.46 *10^{28} * (1.60*10^{-19}) * v *  5.261 *10^{-6}

=>     v  = 0.0002808 \ m/s

       

8 0
3 years ago
The search for black holes involves searching for The search for black holes involves searching for Group of answer choices sing
trasher [3.6K]

Answer:

Large spherical regions from which no light is detected

Explanation:

A black hole is an object that has an extremely high density such that it possesses very powerful gravitational force that prevents the escape of all objects including light from it, and consumes nearby objects.

Due to the power of the gravitational force of a black hole, at the center, objects are infinitesimally compressed resulting in the inapplicability of the concept of space and time and the location is known as a singularity

Therefore, the search for black holes involves searching for <em>large spherical regions from which no light is detected</em>.

4 0
2 years ago
A mass spectrometer applies a voltage of 2.00 kV to accelerate a singly charged positive ion. A magnetic field of B = 0.400 T th
N76 [4]

The mass of the ion is 5.96 X 10⁻²⁵ kg

<u>Explanation:</u>

The electrical energy given to the ion Vq will be changed into kinetic energy \frac{1}{2}mv^2

As the ion moves with velocity v in a magnetic field B then the magnetic Lorentz force Bqv will be balanced by centrifugal force \frac{mv^2}{r}.

So,

Vq = \frac{1}{2}mv^2

and

Bqv = \frac{mv^2}{r}

Right from these eliminating v, we can derive

m = \frac{B^2r^2q}{2V}

On substituting the value, we get:

m = \frac{(0.4)^2X (0.305)^2 X1.602X 10^-^1^9}{2X 2000}\\\\

m = 5.96 X 10⁻²⁵ kg.

3 0
3 years ago
Badminton is only an individual sport<br><br> True<br> False<br><br> (This is gym)
Alekssandra [29.7K]

Answer:

false

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Julian and Joshua each maintain a constant speed as they run laps around a 400-meter track. In the time it takes Julian to compl
    11·2 answers
  • a diver on a board 7.5m above the water walks off the end with a horizontal velocity of 2.3 m/s when they hit the surface of the
    7·1 answer
  • Gravity is a force. <br> True <br> False
    14·2 answers
  • The pitch of a sound wave refers to the loudness of a wave. True False
    7·2 answers
  • What is the wavelength of the radio waves from an FM station operating at a frequency of 99.5 MHz
    5·1 answer
  • Can someone help answers these questions? <br> (I attached the pictures)
    12·1 answer
  • Equal forces that do not cause a change in an object's motion
    7·1 answer
  • A 3.47-m rope is pulled tight with a tension of 106 N. A wave crest generated at one end of the rope takes 0.472 s to propagate
    5·1 answer
  • What causes scientific knowledge to change over time?
    15·2 answers
  • What is a possible state of an object in the absence of a net force?a.)at restb.)constant velocity c.)zero accelerationd.)all of
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!