COMPREHENSIVE STUDY GUIDE 2026 FULL
QUESTIONS AND SOLUTIONS GRADED A+
• If the insulation resistance reading, using a megohmmeter, shows a sudden
drop, it indicates A. tests are being made at wrong points. B. incorrect
voltage used for testing. C. routine inspections are needed. D. developing
trouble..
Answer: D. developing trouble.
• The primary purpose of peening as welding progresses is to A. condition the
surface for further welding B. relieve stresses C. clean the scale from the
weld. D. Eliminate pores..
Answer: B. relieve stresses
• According to the electron theory, a flow of current is a movement of A.
protons from atom to atom. B. electrons from atom to atom. C. the nucleus
around the atom. D. molecules within an atom..
Answer: B. electrons from atom to atom.
• Which of the following can transfer power between two turning shafts
located at right angles? A. Spur gears B. Worm gears C. Rack and pinion
gears D. Herringbone gears.
Answer: B. Worm gears
• The quantity of heat necessary to raise one pound of water one degree
Fahrenheit is A. a calorie. B. a BTU. C. a therm. D. Celsius..
Answer: B. a BTU.
• Which best describes the piston surface area of a single-rod, double-acting
piston? A. Spring-loaded B. Unequal C. Equal D. Balanced.
Answer: B. Unequal
• To increase the PIV (peak inverse voltage) ability of an SCR circuit (power