In an RC parallel circuit, ET = 240 V, R = 1000 ?, and XC = 1500 ?. What is the apparent power?
A. 38.4 VA
B. 57.6 VA
C. 56 VA
D. 69.23 VA
Answer: D
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Which of the following statements best explains why safety professionals need to know the common causes of accidents?
A) Knowing the common causes of accidents can narrow the field of possibilities for investigators B) Knowing what to look for can be a major asset when investigating an accident C) Knowing the more common causes of accidents is like knowing the streets D) All of the above
?The temperature of an arc can range between5500°F (3000°C) to above 36,000°F (20,000°C) but most SMAW temperatures are around __________.
A. ?4500°F (2500°C) B. ?3200°F (18000°C) C. ?1100°F (6100°C) D. ?6000°F (3300°C)
Which compound gearset uses a planetary gearset in front of a Ravigneaux gearset?
A) Lapelletier gearset B) Simpson gearset C) Simple gearset D) Ravigneaux gearset
What material formerly used in friction linings may cause lung damage with repeated exposure?
A) Fiberglass B) Carbon fiber C) Asbestos D) Ceramic fiber