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Doctors Medicines MCQs Q&A

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Which of the following statements is/are true? A: If a circle is formed from a wire, which was initially in the shape of a semi-circle, then ratio of radius of circle and that of semi-circle will be 7: 11. B: If in a semi-circle of radius ‘r’, another semi-circle of radius ‘4r/5’ is drawn, then area of the remaining part of larger semi-circle will be ‘3πr2/5’. C: In a circle of radius ‘r’, if ‘O’ is the center of circle and radii OA and OB are at the angle of 45°, then the length of major arc AB will be ‘7πr/8’.
Consider the following statements regarding gear tooth designing for gear drive: 1. Tooth profiles not designed as per ‘law of gearing’ will cause vibration and impact problems even at low speed. 2. As the gears go through their mesh, the pitch point must remain stationary on the line of centres. 3. In a correctly designed tooth profile, the line of action of successive instantaneous points of contact will pass through the stationary pitch point. Which of the above statements are correct?
Difference between space width and to thickness of tooth along the pitch circle is known as
Distance measured along the circumference of pitch circle from a point on tooth to the corresponding point on adjacent tooth is known as
The distance measured along the circumference of the pitch circle from a point on one tooth to the same point on the adjacent tooth is called ________________
The difference between the tooth space and the tooth thickness as measured on the pitch circle, is called
Force exerted by driving tooth on the driven tooth along the line of pitch point to the point of contact of two teeth is known as
In measuring the chordal thickness, the vertical scale of a gear tooth caliper is set to the chordal or corrected addendum to locate the caliper jaws at the pitch line.If a = addendum, t = circular thickness of tooth at pitch diameter D, then chordal thickness is equal to
What is the radial distance of a tooth from the pitch circle to the top of the tooth known as?
That surface of the tooth which is between the pitch circle and the top of the tooth is known as