Theory & Design第 94 / 110 题
The demand factor of a system is defined as:
a.A value always greater than 1
b.Maximum demand divided by total connected load
c.Connected load divided by maximum demand
d.Always equal to 1
解析
Demand factor = maximum demand / total connected load; it is 1 or less and reflects load diversity.
免费刷完整 110 道题库 — 无需注册。
同考点相关题目
- A single-line (one-line) diagram represents an electrical system by:
- A transformer steps 480 V down to 120 V. What is its turns (voltage) ratio?
- A transformer has a 4:1 turns ratio and a 10-A primary current. What is the secondary current (ideal)?
- An AC circuit at 240 V draws 12 A. What is the circuit impedance?
- A continuous load draws 40 A. At what minimum ampacity must the branch-circuit conductors and overcurrent device be rated?
- What are the commonly recommended maximum voltage-drop limits for a branch circuit and for the combined feeder plus branch circuit?