Theory Of Machines Test Questions Start Creating PDF

MCQ: Maximum efficiency of spiral gears is given as

1. [cos ( θ + Φ) + 1] / [ cos ( θ – Φ) + 1]
2. [cos ( θ + Φ) – 1] / [ cos ( θ – Φ) – 1]
3. [sin ( θ + Φ) – 1] / [ cos ( θ – Φ) – 1]
4. [sin ( θ + Φ) – 1] / [ sin ( θ – Φ) – 1]

MCQ: Which type of gears have point contact between two mating gears?

1. Helical gears
2. Spiral gears
3. Both a. and b.
4. None of the above

MCQ: Which of the following statements is/are true?

1. Lead angle of worm and spiral angle of worm wheel should be equal
2. Worm and worm gear have shaft angle of 90°
3. Helical gears have opposite hand of helix when two teeth mesh
4. All of the above

MCQ: Determine axial force acting on bevel gears when tangential force of 2700 N acts on it. Pitch cone angle = 12.36° & Pressure angle = 30°

1. 295.82 N
2. 333.67 N
3. 347.26 N
4. insufficient data

MCQ: If lead angle of worm is 13° and lead of worm is 40 mm. Find pitch circular diameter of worm

1. 53.22 mm
2. 55.15 mm
3. 27.67 mm
4. None of the above

MCQ: Which motion of follower is best for high speed cams?

1. SHM follower motion
2. Uniform acceleration and retardation of follower motion
3. Cycloidal motion follower
4. All of the above

MCQ: Which of the following statements is false for SHM follower motion?

1. SHM can be used only for moderate speed purpose
2. The acceleration is zero at the beginning and the end of each stroke
3. The jerk is maximum at the mid of each stroke
4. Velocity of follower is maximum at the mid of each stroke

MCQ: Which of the following conditions can be used to minimize undercutting in cam and follower mechanism?

1. By using larger roller diameter
2. By using internal cams
3. By decreasing the size of the cam
4. All of the above

MCQ: What is meant by order defect?

1. The precision points are not properly configured
2. The links of mechanism do not cover all precision points
3. Both a. and b.
4. None of the above

MCQ: Why are graphical errors caused during function generation?

1. Choice of scale
2. Wrong graphical procedure
3. Both a. and b.
4. None of the above