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svlad2 [7]
3 years ago
15

A refrigerator having a power rating of 350W operates for 12 hours a day. calculate the cost of electrical energy to operate it

for 30 days. the rate of electrical energy is rs4.50 per kWh. calculate the minimum fuse rating to be put in the refrigerator circuit if the supply voltage is 240V.​
Physics
1 answer:
rodikova [14]3 years ago
3 0

Answer:

See the answers below.

Explanation:

The cost of energy can be calculated by multiplying each given value, a dimensional analysis must be taken into account in order to calculate the total value of the cost in Rs.

Cost=0.350[kW]*12[\frac{hr}{1day}]*30[days]*4.5[\frac{Rs}{kW*hr} ]=567[Rs]

The fuse can be calculated by knowing the amperage.

P=V*I

where:

P = power = 350 [W]

V = voltage = 240 [V]

I = amperage [amp]

Now clearing I from the equation above:

I=P/V\\I=350/240\\I=1.458[amp]

The fuse should be larger than the current of the circuit, i.e. about 2 [amp]

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Most pressure sensors operate at 5 volts from a computer and return a signal (voltage or frequency) based on the pressure applied to the sensor (vacuum). When testing the MAP sensor, make sure that the vacuum hose and hose connections are tightly connected to the engine vacuum source. According to this, concluding that the statements from both technicians are correct.

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4 years ago
Ted lifts a 10N weight at a height of 1.5 m in 1
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Answer:

D. Ted expanded more power.

Explanation:

Given the following data;

For Ted.

Force = 10N

Height = 1.5m

Time = 1 seconds

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Power = workdone/time

But workdone = force * distance

Workdone = 10 * 1.5

Workdone = 15 Nm

Power = 15/1

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For Johnny.

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Time = 2 seconds

To find Ted's power;

Power = workdone/time

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Power = 15/2

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5 0
3 years ago
FIRST CORRECT ANSWER GETS BRAINLYIEST AND A THANKS!!!
aksik [14]
Your answer is: theres not a certain age. its when the person decides to act mature.

Hope i helped!:)
5 0
4 years ago
Someone please help me
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The answer is A. conduction
7 0
3 years ago
According to Newton’s first law of motion, when will an object at rest begin to move?
Natasha_Volkova [10]

Newton's first law of motion says something like "An object remains
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Constant uniform motion means no change in speed or direction.
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8 0
4 years ago
Read 2 more answers
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