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2 years ago

Might a synchronous motor equally well be called a synchronous inductor

1 answer:

3 0

In Engineering, a synchronous motor is sometimes referred to as synchronous capacitor but not a synchronous inductor.

<h3>What is a synchronous motor?</h3>

A synchronous motor can be defined as an alternating current (AC) electric motor in which the rotation speed of the shaft is directly proportional to the frequency of the supply current, especially at steady state.

Basically, a synchronous motor is sometimes referred to as a synchronous capacitor because it can be used to correct the power factor (PF) of a lagging load such as an induction motor.

However, a synchronous motor cannot be called a synchronous inductor because the rotation speed of the shaft is not proportional to the synchronous speed of the motor. Thus, they are called an synchronous motor.

Read more on synchronous motor here: brainly.com/question/12975042

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Why does voltage have so many names

BARSIC [14]

Answer:

Europe and most other countries in the world use a voltage which is twice that of the US. ... Originally Europe was 120 V too, just like Japan and the US today, but it was deemed necessary to increase voltage to get more power with fewer losses and less voltage drop from the same copper wire diameter

www.worldstandards.eu › electricity › why-no-standard-voltage

Explanation:

6 0

3 years ago

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Air, at a free-stream temperature of 27.0°C and a pressure of 1.00 atm, flows over the top surface of a flat plate in parallel f

Morgarella [4.7K]

Answer:

Explanation:

Given that:

V = 12.5m/s

L= 2.70m

b= 0.65m

$T_{ \infty} = 27^0C= 273+27 = 300K$

$T_s= 127^0C = (127+273)= 400K$

P = 1atm

Film temperature

$T_f = \frac{T_s + T_{\infty}}{2} \\\\=\frac{400+300}{2} \\\\=350K$

dynamic viscosity =

$\mu =20.9096\times 10^{-6} m^2/sec$

density = 0.9946kg/m³

Pr = 0.708564

K= 229.7984 * 10⁻³w/mk

Reynolds number,

$Re = \frac{SUD}{\mu} =\frac{\ SUl}{\mu}$

$=\frac{0.9946 \times 12.5\times 2.7}{20.9096\times 10^-^6} \\\\Re=1605375.043$

we have,

$Nu=\frac{hL}{k} =0.037Re^{4/5}Pr^{1/3}\\\\\frac{h\times2.7}{29.79\times 10^-63} =0.037(1605375.043)^{4/5}(0.7085)^{1/3}\\\\h=33.53w/m^2k$

we have,

heat transfer rate from top plate

$\theta _1 =hA(T_s-T_{\infty})\\\\A=Lb\\\\=2.7*0.655\\\\ \theta_1=33.53*2.7*0.65(127/27)\\\\ \theta_1=5884.51w$

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3 years ago

A soil specimen was tested to have a moisture content of 32%, a void ratio of 0.95, and a specific gravity of soil solids of 2.7

belka [17]

Answer:

a. 0.9263

b. 0.4872

c. 13.83kN/m $^{3}$

Explanation:

moisture content (ω) = 0.32

void ratio (e) = 0.95

specific gravity ( $G_{s}$ ) = 2.75

the degree of satruation (S) = $\frac{w . G_{s} }{e}$ =0.32×2.75/0.95 = 0.9263

b. porosity (n) = $\frac{e}{e + 1}$ = 0.95/(0.95 + 1)= 0.4872

c. dry unit weight (γ $_{d}$ ) = $\frac{G_{s} . V_{w} }{1 + e}$

taking specific unit weight of water (V $_{w}$ )= 9.81kN/m $^{3}$

γ $_{d}$ = 2.75 × 1000/(1 + 0.95) = 13.83kN/m $^{3}$

5 0

3 years ago

5. If you designed a part with an overall width dimension of 1.250 inches and printed it on the same 3D printer using the same f

sleet_krkn [62]

Answer:

hu22 54=52222222222222

3 0

3 years ago

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The reason for the nature of the signal's value is: Not Linear Humans are Continuous The stock market closes once per day, and s

Serga [27]

Answer:

Explanation:

* Daily close of the stock market

The nature of the signal in value is <u>Discrete</u>, as the stock market closes once per day,and so is discrete time.
And the nature of the signal in time is continuous as the company are continuous.

8 0

3 years ago