Millwright Exam Prep 2023/2024 with 100% correct answers

1. When the downward force at C2 is 100 lb and D2 = 2.5 inches, the upward force at C1 will be ________lb if D1 = 4 inches. A. 160 B. 256 C. 384 D. 240 - correct answer A. 160 x/12.56 sq in = 100 lbs/7.85 sq in x = (100lbs/7.85 sq in)12.56 x = 160 lbs 2. Add the following decimals and express the answer to three decimal places. 0.4789 + 3.125 + 9.656 A. 13.26 B. 13.3 C. 13.259 D. 13.2599 - correct answer C. 13.259 3. What are common materials used as electrical conductors? A. Silver, copper, aluminum B. Copper, glass, lead C. Mica, rubber, titanium D. Gold, copper, mica - correct answer A. Silver, copper, aluminum 4. Large impulse turbines will use what of rotor? A. Build-up rotors. B. Solid rotors C. Combination of solid and build-up rotors D. All of the above - correct answer D. All of the above 5. The most effect purging medium to use when dealing with iron sulphide is: A. air B. carbon dioxide C. nitrogen D. water - correct answer D. water 6. The shape of a ball bearing is ______ when a load is applied to the ball. A. elliptical B. circular C. rectangle D. radial E. trapezoid - correct answer A. elliptical 7. Which of the following is a typical 4000 hour inspection duty with compressors? A. Service the crankcase breather B. Take oil samples C. Recalibrate all temperature and pressure gauges D. Check gas discharge and inlet temperatures - correct answer A. Service the crankcase breather