Physics Test 2 General Science Aptitude
Physics Test 2 General Science Aptitude
Question 11
One thousand watt power is called as_____?
1 kilowatt (kW) is defined as 1000 watts. Hence, 1000 W = 1.0 kW.
Not clear enough?
Question 12
The meter installed in our homes measure electricity in_____?
Electricity meters measure energy consumption in kilowatt-hours (kWh), which represents the use of 1000 watts for one hour.
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Question 13
One kilowatt-hour is the amount of electrical energy that is consumed by 1000 watt appliance in_____?
A 1000 W (1 kW) device running for 1 hour consumes 1 kWh of energy.
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Question 14
According to the definition of 1 KWh, a 100 watt bulb consumes one unit of electricity in_____?
Energy consumed: \( E = P \times t \). For a 100 W bulb to consume 1 kWh (1000 Wh): \( t = 1000 / 100 = 10 \; \text{hours} \).
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Question 15
Units of electricity consumed by 2500 watt air-conditioner in one hour are____?
Energy consumed in 1 hour = 2500 W × 1 hr = 2.5 kWh = 2.5 units.
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Question 16
In the electricity meter, the digit to the extreme right is_____?
The last digit on electricity meters represents tenths of a unit (1/10 of 1 kWh).
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Question 17
In which system of units, gas bills are charged?
Gas bills are charged using the BTU (British Thermal Unit) system, which measures heat energy.
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Question 18
In BTU system, one BTU is equal to_____?
1 BTU ≈ 1055 Joules. Rounded, it is often represented as 10.55 × 10\(^2\) J. The correct option given is D.
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Question 19
BTU is the abbreviation of_____?
BTU stands for British Thermal Unit, a traditional unit of heat energy.
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Question 20
All forms of energy that we use are ultimately transformed into_____?
According to the law of energy conservation, most energy transformations end as heat energy due to inefficiencies and dissipation.
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