Chapter 6 PROBLEMS, THEIR CAUSES AND REMEDIES OF CRANKSHAFT MCQs 10 min Score: 0 Attempted: 0/10 Subscribe 1. Torsional stresses occur due to the _________ developed in the shaft when it rotates: (A) twisting forces (B) friction (C) combustion pressure (D) None of theseShow All Answers 2. Bending stresses are developed due to the firing and ________ forces: (A) vacuum (B) compression (C) exhaust (D) None of theseShow All Answers 3. Axial stresses come on the shaft from the: (A) piston side (B) propeller side (C) fan pulley (D) None of theseShow All Answers 4. If the fuel supply of each cylinder is not uniform, the stress of ________ will be uneven: (A) piston (B) valve (C) crankshaft journal (D) None of theseShow All Answers 5. Due to the worn oil pump, the result will be: (A) flow is not smooth (B) insufficient oil supply (C) oil pressure drop (D) All of theseShow All Answers 6. The cause of deflection is: (A) Bearing wear due to usage over time (B) The engine is overloaded (C) Engine overspeed (D) All of the aboveShow All Answers 7. The remedy of crankshaft twisting is: (A) identify the pre-ignition (B) remove the excessive load (C) check flywheel for tightness on crankshaft (D) All of theseShow All Answers 8. If the crankshaft makes contact with the journal bearing surfaces, it gradually: (A) decreases clearance (B) increases clearance (C) fatigues the journal (D) None of theseShow All Answers 9. Dynamic balancing is a way to balance out machines by ______ quickly: (A) static parts (B) rotating parts (C) both a & b (D) None of theseShow All Answers 10. The ______ are cast or forged in place when the crankshaft is formed: (A) main journal (B) rod journal (C) counterweights (D) None of theseShow All Answers