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Arte-miy333 [17]
2 years ago
9

(a) In a 3-phase, 4-wire system, the currents are in the A, B, and C lines under abnormal conditions of loading were as follows:

IA = 100/30° A, 1b = 50/300° A, and Ic = 30/180° A
(i) Calculate the positive, negative, and zero-phase sequence currents in the A-line.

(ii) Calculate the return current in the neutral conductor.


(b) Check by sketching IA, IB, and Ic as the sum of the appropriate symmetrical components.

Engineering
1 answer:
Verizon [17]2 years ago
5 0

Answer:

Check the attached image below

Explanation:

Kindly check the attached image below to get the step by step explanation to the question above.

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. A roadway is being designed capable of allowing 70 mph vehicle speed. The superelevation around one curve is 0.05 inches per i
adelina 88 [10]

The minimum radius of the curve to the vehicle to provide safe travel is 2339.2 ft

<u>Explanation:</u>

Given -

Speed allowed, v = 70mph

1 mph = 1.467 fps (feet per second)

Therefore, v = 70 X 1.467 fps

Superelevation, e = 0.05 inches/inch

Coefficient of side friction, fs = 0.09

Minimum radius of the curve, r = ?

We know,

r = v² / g ( fs + e/100 )

where,

g = acceleration due to gravity in feet

g = 32.2 lb.ft / lbf.s²

r = ( 70 X 1.467 )² / 32.2 ( 0.09 + 0.05 )

r = 2339.2 ft

Therefore, the minimum radius of the curve to the vehicle to provide safe travel is 2339.2 ft

6 0
3 years ago
What are four engineering degrees that can help lead you to becoming an aerospace engineer
mamaluj [8]

Answer:

Mechanical Engineering, Aerospace Engineering, Electrical Engineering, Aeronautical Engineering

Explanation:

I'm a Mechanical Engineer, and I considered Aerospace.

7 0
2 years ago
The specific gravity of a substance that has mass of 10 kg and occupies a volume of 0.02 m^3 is a) 0.5 b) 1.5 c) 2.5 d) 3.5 e) n
zhuklara [117]

Answer:

Specific gravity is 0.5 so option (a) is correct option

Explanation:

We have given mass of substance m =10 kg

Volume V=0.02m^3

Density of substance is given by Density\ d=\frac{mass}{volume}=\frac{10}{0.02}=500kg/m^3

Specific gravity is given by specific\ gravity=\frac{density\ of\ substance}{density\ f\ water}=\frac{500}{1000}=0.5

So option (a) is correct option

5 0
3 years ago
A flame ionization detector, which is often used in gas chromatography, responds to a change in
Lena [83]

Answer:

Option A

Explanation:

We know that ions are present in hydrogen-air flame and when the burning of an organic compound takes place in this flame more ions are produced in the flame.  

Thus when we apply a voltage across this flame, the ion collector plate attracts the all the ions in the flame.

The presence of organic compounds increases the voltage across the hydrogen ion flame produced at the ion collector increases and as the voltage increases, the detection of the organic compound can be made in turn.

Thus flame ionization detector clearly responds to the variation in the collection of ions or electrons in a flame.

3 0
3 years ago
Which is a better hydraulic cross section for an open channel: one with a small or a large hydraulic radius?
Cerrena [4.2K]
Hydraulic radius is caused by pressurized hydrogen air so that should mean the answer is hydraulic radius
6 0
2 years ago
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