The reactants of a certain chemical reaction contain 26 kJ of potential

A 30-km, 34.5-kV, 60-Hz, three-phase line has a positive-sequence series impedance z 5 0.19 1 j0.34 V/km. The load at the receiv

zmey [24]

Answer:

(a) With a short line, the A,B,C,D parameters are:

A = 1pu B = 1.685∠60.8°Ω C = 0 S D = 1 pu

(b) The sending-end voltage for 0.9 lagging power factor is 35.96 $KV_{LL}$

(c) The sending-end voltage for 0.9 leading power factor is 33.40 $KV_{LL}$

Explanation:

(a)

Considering the short transition line diagram.

Apply kirchoff's voltage law to the short transmission line.

Write the equation showing the relations between the sending end and the receiving end quantities.

Compare the line equations with the A,B,C,D parameter equations.

(b)

Determine the receiving-end current for 0.9 lagging power factor.

Determine the line-to-neutral receiving end voltage.

Determine the sending end voltage of the short transition line.

Determine the line-to-line sending end voltage which is the sending end voltage.

(c)

Determine the receiving-end current for 0.9 leading power factor.

Determine the sending-end voltage of the short transition line.

Determine the line-to-line sending end voltage which is the sending end voltage.

8 0

3 years ago

Which front formed widespread clouds rain or snow

Karolina [17]

Answer: A cold front occurs when cold, denser air replaces the rising, less dense air mass. The reason this front brings in the rain is that as the rising warm air cools (as it rises to the cooler upper atmosphere) the moisture in it condenses into clouds that precipitate down as rain or snow.

8 0

3 years ago

Read 2 more answers

Make the following conversion:

katrin2010 [14]

Answer:

Kelvin to Celsius: C = K - 273 (C = K - 273.15 if you want to

6 0

2 years ago

Help..... :(

natali 33 [55]

Sonography is most likely because it has good resolution without radiation.

6 0

3 years ago

Read 2 more answers

What two factors affect projectile motion? A) distance and angle B) distance and amplitude C) initial velocity and angle D) init

maksim [4K]

Answer:

C) Initial velocity and angle

Explanation:

The path of the projectile motion is a parabolic path. The motion of a projectile motion is studied by splitting the motion into 2 mutually perpendicular components; one along the horizontal x axis and other vertical y axis.

The position of the projectile at any time $t$ is given as:

$x=ut\cos \theta\\y=ut\sin \theta - \frac{1}{2}gt^2$

Where,

$u\rightarrow \textrm{Initial velocity}\\v\rightarrow \textrm{Final velocity}\\\theta\rightarrow \textrm{Angle of projection}\\g\rightarrow \textrm{Acceleration due to gravity}$

From the above equations, we conclude that,

The projectile motion depends on two factors:

i. Initial velocity ( $u$ )

ii. Angle of projection ( $\theta$ )

Option C is correct.

4 0

3 years ago