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3 years ago

Under maximum power transfer conditions, the operating efficiency of a system is 100%. (a) True (b) False

Engineering

1 answer:

Free_Kalibri [48]3 years ago

6 0

Answer:

False

Explanation:

Under maximum power transfer the operating efficiency of the system is only 50% so the given statement is false statement

Maximum power is transferd only when the load resistance is equal to the source resistance the maximum power transfer is given by $\frac{V_{TH}^2}{4R_{TH}}$ where $V_{TH}$ is Thevenin voltage and $R_{TH}$ is thevenin resistance

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Consider a single crystal oriented such that the slip direction and normal to the slip plane are at angles 42.7° and 48.3°, resp

icang [17]

Answer:

A certain vehicle loses 3.5% of its value each year. If the vehicle has an initial value of $11,168, construct a model that represents the value of the vehicle after a certain number of years. Use your model to compute the value of the vehicle at the end of 6 years.

Explanation:

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3 years ago

An asphalt concrete mixture includes 94% aggregates by weight. The specific gravity of aggregate and asphalt are 2.7 and 1.0, re

riadik2000 [5.3K]

Answer:

The correct solution is "5.74%".

Explanation:

The given values are:

Gravity of aggregate,

$G_{agg}=2.7$

Gravity of asphalt,

$G_{asp}=1.0$

Asphalt concrete mixture,

$W_{agg}=0.94 \ W_m$

We know that,

$W_{asp}=W_m-W_{agg}$

$=0.06 \ W_m$

Now,

The theoretical specific gravity of mix,

⇒ $G_t=\frac{W_{agg}+W_{asp}}{\frac{W_{agg}}{G_{agg}} +\frac{W_{asp}}{G_{asp}} }$

By putting the values, we get

$=\frac{0.94 \ Wm+0.06 \ Wm}{\frac{0.94 \ Wm}{2.7} +\frac{0.06 \ Wm}{1} }$

$=2.45$

hence,

The percentage of voids will be:

⇒ %V = $\frac{G_t-G_m}{G_t}\times 100$

= $\frac{2.45-2.317}{2.45}\times 100$

= $\frac{0.133}{2.317}\times 100$

= $5.74$ (%)

8 0

3 years ago

Me ayudas plis noce

alekssr [168]

Answer:

Explanation:

7 0

3 years ago

Danny enjoys studying transportation networks and systems. Which field of engineering should he pursue?

andre [41]

Answer:

Civil Engineering.

Explanation:

Civil Engineering is a field of engineering study that deals with professional practising in designing and developing infrastructures such as transport system and networks, buildings, etc.

Civil engineering is regarded as the second--oldest form of engineering studies in the field of engineering.

A person who studies civil engineering is able to design and develop major projects in transportations system such as road construction, bridges, airports, tunnels, etc.

So, Danny, who is interested in studying transporation networks and system should opt for studying civil engineering.

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3 years ago

Please read and an 3. Many Jacks use hydraullc power. A) O True B) O False

drek231 [11]

Answer:

A) True. I hope this helps

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3 years ago