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MCQs 1: What is meant by mean time to failure (MTTF)?

Mean time between two successive failure components Maximum time between two successive failure components Sum of survival time for number of components divided by number of failures Sum of number of failures divided by survival time for number of components
Answer Explanation

MCQs 2: What causes infant mortality in mechanical equipments?

Design errors Manufacturing defects Installation defects All of the above
Answer Explanation

MCQs 3: Which of the following statements is true for structure/speed diagrams?

Structure diagrams gives range ratio of spindle speeds Speed diagrams do not give range ratio of spindle speeds Speed diagrams consider motor speed All of the above
Answer Explanation

MCQs 4: What is the purpose of using a gear box?

To increase torque To increase speed Converts single input speed into multiple output speeds All of the above
Answer Explanation

MCQs 5: Ratio of two spindle speeds is constant in _________ progression.

Arithmetic Geometric Harmonic None of the above
Answer Explanation

MCQs 6: What is harmonic progression?

Difference between reciprocal of two successive spindle speeds is constant Difference between two successive spindle speeds is constant Ratio of two successive spindle speeds is constant. Ratio of two successive spindle speeds is variable.
Answer Explanation

MCQs 7: Diameter range is high in geometric progression due to _________ spindle speed.

low high constant none of the above
Answer Explanation

MCQs 8: Which of the following statements is false for troughed belt conveyors? 1. Troughed belt conveyors use flexible belts 2. They contain five idlers 3. Depth of trough decreases with increasing number of idlers 4. Flexibility of belt increases as depth of trough decreases

1 and 2 2 and 3 3 and 4 None of the above
Answer Explanation

MCQs 9: Which belt conveyor prevents sliding down of material at an inclination of 55° with horizontal?

Flat belt conveyor Troughed belt conveyor Blanket belt conveyor Woven wire belt conveyors
Answer Explanation

MCQs 10: What are bulk loads?

Lump of material Single rigid mass Homogeneous particles Heterogeneous particles
Answer Explanation

MCQs 11: Which of the following is not a hoisting equipment with lifting gear?

Cage elevators Jib cranes Pulleys Troughed belts
Answer Explanation

MCQs 12: Which of the following is a property of bulk load?

Hardness Cake forming tendency Suspension part Weight
Answer Explanation

MCQs 13: What are the factors affecting selection of casting process?

Tolerances Surface finish Both a. and b. None of the above
Answer Explanation

MCQs 14: In forging process, forging plane is the plane __________

parallel to die motion perpendicular to die motion where two die halves meet none of the above
Answer Explanation

MCQs 15: Which of the following processes is used for surface finishing?

Shaping Broaching Lapping All of the above
Answer Explanation

MCQs 16: Which of the following statements is/are true about safety/risk?

Risk is potential for damage Hazard is likely hood of damage Danger is combination of risk and hazard All of the above
Answer Explanation

MCQs 17: Which of the following ergonomic factors are encountered in engineering applications?

Thermal radiations Lubrication failure Fatigue Corrosion
Answer Explanation

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