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4 years ago

10

The inpet to a controller in the control system is: (A) sensed signal (B) reference signal (C) desired variable value (D) system

output (E) none of above

1 answer:

Ksivusya [100]4 years ago

4 0

I would say D but I am not for sure

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5. One of the major road blocks for direct DC power in residences is the ___. A) generation of DC B) lack of standardization C)

Montano1993 [528]

Answer:

D) quantity of components required for this type of system

Explanation:

Electricity can be transmitted using the alternating and direct currents. The alternating current is one in which the flow of the current diverts at certain time intervals whereas, the direct current is one in which there is a constant one-directional flow of current. The DC is used in batteries and solar panels. Residential areas and business places make use of the AC current.

One of the several reasons why the DC is not used in homes is because unlike the AC it is not easy to build and sustain. Moreso, it has more components compared to the AC. For example, its motor consists of brushes and commutators . The components, example, switches are also large compared to the AC components.

6 0

4 years ago

Consider two different types of motors. Motor A has a characteristic life of 4100 hours (based on a MTTF of 4650 hours) and a sh

Daniel [21]

Answer:B

Explanation:

Given

For motor A

Characteristic life(r)=4100 hr

MTTF=4650 hrs

shape factor(B )=0.8

For motor B

Characteristic life(r)=336 hr

MTTF=300 hr

Shape Factor (B)=3

Reliability for 100 hours

$R_a=e^{-\left ( \frac{T-r}{n}\right )B}$

$R_a=e^{-\left ( \frac{4650-4100}{100}\right )0.8}$

$R_a=e^{-4.4}=0.01227$

For B

$R_b=e^{-\left ( \frac{300-336}{100}\right )3}$

$R_b=e^{1.08}=2.944$

B is better for 100 hours

(b)For 750 hours

$R_a=e^{-0.5866}=0.55621$

$R_b=e^{0.144}=1.154$

So here B is more Reliable.

3 0

3 years ago

All these are returnless fuel systems EXCEPT ?

Ivenika [448]

Answer:

we need to see what you're being asked about

Explanation:

3 0

3 years ago

Convert the following indoor air quality standards, established by the U.S. Occupational Safety and Health Administration (OSHA)

sp2606 [1]

Wouldn’t this be science not engineering?

3 0

3 years ago

WIL MARK U AS BRAINLIEST HELP PLZ

ss7ja [257]

Answer:

The 1st one:Your natural ability

4 0

3 years ago