1.What is the ideal value for power factor?
1.功率因数的理想值是多少？
2.What is the total resistance shown in the diagram?
2.图中所示的总电阻是多少？
3.In a 208V panel, the neutral conductor carries:
3.在一个 208V 的配电盘中，中性导体承载的电流是：
4.Based on the transformer diagram, what is the current (I)?
4.根据变压器示意图，电流 (I) 的数值是多少？
5.For circuits under 50V, what is the minimum receptacle rating for a 4V handheld lamp?
5.对于电压低于 50V 的电路，为 4V 手持式灯具配置的插座，其额定值最低应为多少？
6.An office uses 120 lamps rated at 40W each. How many 20A, 120V lighting circuits are required?
6.某办公室使用了 120 盏灯，每盏额定功率为 40W。请问需要多少条 20A、120V 的照明支路？
7.What service size is appropriate for a 5000 sq ft all-electric residence?
7.对于一栋面积为 5000 平方英尺、全电气化的住宅，多大的供电引入容量（Service size）是合适的？
8.Which situation does NOT permit multiple service entrances from one drop?
8.在哪种情况下，不允许从同一条进户线引出多个进户点？
9.All are true for fused mains with breaker branches EXCEPT:
9.关于采用熔断器主回路与断路器支回路的系统，下列陈述均正确，除了：
10.Max cord length for GFCI-protected spa:
10.受 GFCI（接地故障断路器）保护的按摩浴缸，其电源线允许的最大长度为：
