I.A.K12 Flashcards
(8 cards)
1
Q
- How much power must a 24V generator furnish to a system which contains the following loads?
A
450W
2
Q
- A 12V electric motor has 1000W input and 1HP output. Maintaining the same efficiency, how much input power will a 24V 1HP electric motor require?
A
1000W
3
Q
- A 24V 1HP DC electric motor that is 80% efficient requires 932.5W. How much power will a 12V 1HP DC electric motor that is 75% efficient require?
A
994.6W
4
Q
- When calculating power in a reactive or inductive AC circuit, the true power is?
A
Less than the apparent power.
5
Q
- Refer to figure 4. How much power is being furnished to the circuit? 23A, 5♤
A
2645W
6
Q
- Which requires the most electrical power?
A
A 1/5HP 24V motor which is 75% efficient.
7
Q
- What unit is used to express electrical power?
A
Watt
8
Q
- What happens to the current in a voltage step up transformer with a ratio of 1 to 4?
A
The current is stepped down by a 1 to 4 ratio.
