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3 years ago

5

Explain why a hydraulic power system would be the best choice when building a device or vehicle that requires large amounts of p

ower, citing at least three examples.

1 answer:

ohaa [14]3 years ago

3 0

Answer:because it faster

Explanation: and when building a device or vehicle that requires large

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What is the condition for sampling frequency to reconstruct the information signal ?

bagirrra123 [75]

A continuous time-varying 1-D signal is sampled by narrow sampling pulses at a regular rate fr = 1/T, which must be at least twice the bandwidth of the signal. At first, it may be somewhat surprising that the original waveform can be reconstructed exactly from a set of discrete samples.

8 0

3 years ago

A pipe leads from a storage tank on the roof of a building to the ground floor. The absolute pressure of the water in the storag

Fudgin [204]

Answer:

6.4 m/s

Explanation:

From the equation of continuity

A1V1=A2V2 where A1 and V1 are area and velocity of inlet respectively while A2 and V2 are the area and velocity of outlet respectively

$A1=\pi (r1)^{2}$

$A2=\pi (r2)^{2}$

where r1 and r2 are radius of inlet and outlet respectively

v1 is given as 1.6 m/s

Therefore

$\pi (0.01)^{2}\times 1.6 = \pi (0.005)^{2}v2$

$V2=\frac {\pi (0.01)^{2}\times 1.6}{\pi (0.005)^{2}}=6.4 m/s$

3 0

4 years ago

A receptacle, plug, or any other electrical device whose design limits the ability of an electrician to come in contact with any

o-na [289]

Answer:

Recessed safe

Explanation:

A recessed, receptacle or plug is one in which the metal interfacing parts have been retracted back in such a way that common contact between a person handling the receptacle or outlet will not ordinarily lead to exposure to electric shock hazard and as such improving the safety of use of such plug, receptacle or electrical device either at home or in industrial setting

A recessed outlet is also more ideal than standard outlets where there are hazards such as potential contact with water.

4 0

3 years ago

IRINA_888 [86]

Uh I’m just gonna say yes because I think this is just something random

5 0

3 years ago

What is the thermal efficiency of this reheat cycle in terms of enthalpies?

schepotkina [342]

Answer:

$\eta =\dfrac{\left (h_3-h_4\right )+(h_5-h_6)-(h_2-h_1)}{(h_3-h_2)+(h_5-h_4)}$

Explanation:

For close gas turbine:

Gas turbine works on Brayton cycle.Gas turbine have lots of applications like ,it is use in aircraft,in land applications etc.

Reheating is the method to improve the efficiency of the gas turbine.In reheating gas is expanding in two turbine instead of one turbine alone.Two turbine like high pressure turbine and low pressure turbine are used for expansion.

In the above diagram 1-2 is a compressor,2-3 heat addition,3-4 high pressure turbine,4-5 reheating of cycle 5-6 low pressure turbine,6-1 heat rejection,

We know that $\eta =\frac{W_{net}}{Q_{s}}$

Now take $h_{1},h_{2},,h_{3},h_{4},h_{5},h_{6}$ represent the enthalpy of point 1,2,3,4,5,6 in the cycle respectively.

So total heat supplied $Q_S$ =

$\left (h_3-h_2\right )+\left (h_5-h_4\right )$

Net work out put

$W_{net}$ = $\left (h_5-h_6\right )-\left (h_2-h_1\right )$

So efficiency $\eta =\frac{W_{net}}{Q_{s}}$

$\eta =\dfrac{\left (h_3-h_4\right )+(h_5-h_6)-(h_2-h_1)}{(h_3-h_2)+(h_5-h_4)}$

5 0

4 years ago