Practice Test: Question Set - 01
1. A 68 Ω resistor is connected across the terminals of a 3 V battery. The power dissipation of the resistor is
- (A) 132 mW
- (B) 13.2 mW
- (C) 22.6 mW
- (D) 226 mW
2. Energy is equal to power multiplied by voltage.
- (A) True
- (B) False
3. A 120 Ω resistor must carry a maximum current of 25 mA. Its rating should be at least
- (A) 4.8
W
- (B) 150 mW
- (C) 15 mW
- (D) 480
mW
4. When the pointer of an analog ohmmeter reads close to zero, the resistor being measured is
- (A) Overheated
- (B) Shorted
- (C) Open
- (D) Reversed
5. The joule is a unit of energy.
- (A) True
- (B) False
6. In 40 kW, there are
- (A) 0.4 mW
- (B) 40,000 W
- (C) 400 W
- (D) 5,000 W
7. How much continuous current can be drawn from a 60 Ah battery for 14 h?
- (A) 42.8 A
- (B) 428 A
- (C) 4.28 A
- (D) 4.2
A
8. The watt is the unit of power.
- (A) True
- (B) False
9. 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?
- (A) 20.16 kWh
- (B) 201.6 kWh
- (C) 2.01 kWh
- (D) 8.4 kWh
10. For 12 V and 40 mA, the power is
- (A) 480
mW
- (B) 0.480 W
- (C) 480,000 µW
- (D) All
of the above
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