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3 years ago

What is engineering?

Engineering

1 answer:

ANTONII [103]3 years ago

8 0

Answer:

the branch of science and technology concerned with the design, building, and use of engines, machines, and structures. Anything that involves engines, wires, etc. basically

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An automotive Battery is rated at120 A-h. This means that under certain test conditions, it canoutput 1 A at 12 V for 120 hours.

Hitman42 [59]

Answer:

Part A:

In W-h:

Energy Stored=1440 W-h

In Joules:

$Energy Stored=5.184*10^6Joules\\Energy Stored=5.184 MJ$

Part B:

In W-h:

Energy left=240 W-h

In Joules:

Energy left= 8.64*10^5 J

Explanation:

Part A:

We are given rating 120A-h and voltage 12 V

Energy Stored= Rating*Voltage (Gives us units W-h)

Energy Stored=120A-h*12V

Energy Stored=1440 W-h

Converting it into joules (watt=joules/sec)

Energy Stored= $1440 Joules * \frac{3600sec}{h}h$

Energy Stored=5184000 Joules

$Energy Stored=5.184*10^6Joules\\Energy Stored=5.184 MJ$

Part B:

Energy used by lights for 8h=150*8

Energy used by lights for 8h=1200W-h

Energy left= Energy Stored(Calculated above)- Energy used by lights for 8h

Energy left=1440-1200

Energy left=240 W-h

Energy left= $240 Joules * \frac{3600sec}{h}h$

Energy left=864000 Joules

Energy left= 8.64*10^5 J

3 0

4 years ago

A TV USE 75 WATTS WHILE IN USED ASSMING THAT ITIS USED 4 HOURS EVERY DAY HOW MUCH ENERGY IN 4 IN KWH WOULD THE TV CONSUME ANNUAL

prohojiy [21]

Answer:

i don't think i understand the question

Explanation:

7 0

2 years ago

Read 2 more answers

) Please label the following statements as either True (T) or False (F). (a) In general, the greater the % of cold work, the sma

Alexandra [31]

Answer:

A. This option is true

B. This option is false

C. This option is true

Explanation:

A. Generally speaking, the greater percentage of cold, the recrystallization grain size would turn out to be smaller. Therefore this true.

B. A higher annealing temperature does not result in smaller recrystallization grain size. Therefore this is false.

C. As the percentage of cold work is greater, the recrystallization temperature would tend to be lower. Therefore this is true.

6 0

3 years ago

Which of these energy technologies does not rely on a generator to produce electricity?

Phantasy [73]

<u>Wind turbine</u> does not rely on a generator to produce electricity. Thus, the correct option is option A.

<h3>What is a generator?</h3>

A generator is a device used in the production of electricity that transforms motive power, which is mechanical energy, or fuel-based power, which is chemical energy, into electric power for use in an external circuit.

Steam turbines, gas turbines, water turbines, internal combustion engines, wind turbines, and even hand cranks can all be used to generate mechanical energy. Michael Faraday, a British scientist, created the Faraday disk, the first electromagnetic generator, in 1831. For electric power grids, generators supply almost all of the energy.

Photovoltaic and fuel cell powered generators, in addition to electromechanical designs, use solar power and hydrogen-based fuels, respectively, to produce electrical output.

Learn more about generators

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8 0

1 year ago

Which of the following is measured by dial gauge?:

Ganezh [65]

Answer:

C. Gap

Explanation: dial gauge is used to measure small spaces

5 0

3 years ago