Energy and Power - General Questions Online Exam Quiz
Energy and Power - General Questions GK Quiz. Question and Answers related to Energy and Power - General Questions. MCQ (Multiple Choice Questions with answers about Energy and Power - General Questions
A 33 half-watt resistor and a 330 half-watt resistor are connected across a 12 V source. Which one(s) will overheat?
Options
A : 33
B : 330
C : both resistors
D : neither resistor
When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is
Options
A : overheated
B : shorted
C : open
D : reversed
In 0.025 W, there are
Options
A : 25 kW
B : 0.00025 mW
C : 2,500 µW
D : 25 mW
A certain appliance uses 350 W. If it is allowed to run continuously for 24 days, how many kilowatt-hours of energy does it consume?
Options
A : 20.16 kWh
B : 201.6 kWh
C : 2.01 kWh
D : 8.4 kWh
A power supply produces a 0.6 W output with an input of 0.7 W. Its percentage of efficiency is
Options
A : 8.57%
B : 42.85%
C : 4.28%
D : 85.7%
A given power supply is capable of providing 6 A for 3.5 h. Its ampere-hour rating is
Options
A : 0.58 Ah
B : 2.1 Ah
C : 21 Ah
D : 58 Ah
A 15 V source is connected across a 12 resistor. How much energy is used in three minutes?
Options
A : 938 Wh
B : 0.938 Wh
C : 56.25 Wh
D : 5.6 Wh
At the end of a 14 day period, your utility bill shows that you have used 18 kWh. What is your average daily power?
Options
A : 1.286 kWh
B : 12.85 kWh
C : 535 kWh
D : 252 kWh
A 120 resistor must carry a maximum current of 25 mA. Its rating should be at least
Options
A : 4.8 W
B : 150 mW
C : 15 mW
D : 480 mW
If you used 400 W of power for 30 h, you have used
Options
A : 1.3 kWh
B : 13.3 kWh
C : 1.2 kWh
D : 12 kWh
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