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Natasha2012 [34]

3 years ago

13

An air-conditioning system's automatic controller might directly control the A. conversion of pneumatic energy to hydraulic sign

al pressure. B. thermostat's setpoint temperature C. motor of a large condenser fan D. sensitivity of the ladder logic

1 answer:

Ilia_Sergeevich [38]3 years ago

8 0

Answer:

A i think so

Explanation:

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a load of 400 Newton is lifted by a first class lever in which the load is at the distance of 20 cm and the effort is at the dis

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Answer:

solution,
Given
load =400N
ld=0.2m
ed=0.6m
effort =150N

Explanation:

efficiency =output work/input work ×100%

l×ld/e×ed×100%

400×0.2/150×0.6×100%

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Thiết bị không phải nguồn điện:

Đáp án D

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3 years ago

Which planet has the GREATEST attraction to the sun?

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3 years ago

For a certain RLC circuit the maximum generator EMF is 125 V and the maximum current is 3.20 A. If le a) the impedance of the ci

MAXImum [283]

Answer:

Part (i)

Z = 39.06 ohm

Part (ii)

R = 21.7 ohm

Explanation:

a) here we know that

maximum value of EMF = 125 V

maximum value of current = 3.20 A

now by ohm's law we can find the impedence as

$z = \frac{V_o}{i_o}$

now we will have

$z = \frac{125}{3.20} = 39.06 ohm$

Part b)

Now we also know that

$\frac{R}{z} = cos\theta$

$\theta = 0.982 rad = 56.3 degree$

now we have

$\frac{R}{39.06} = cos56.3$

$R = 21.7 ohm$

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