1. . The operation of making a hole in a solid workpiece
(A) boring
(B) reaming
(C) counter sinking
(D) drilling
2. . The angle subtended by cutting lips of a twist drill
(A) 116°
(B) 118°
(C) 120°
(D) 122°
3. . The machine that can drill few holes simultaneously
(A) bench drill machine
(B) radial drill press
(C) gang drill machine
(D) multi spindle drill machine
4. . The device used to draw twist drill out from spindle of drill machine
(A) chuck key
(B) drill drift
(C) puller
(D) hammer
5. . Enlarging the diameter of already drilled hole is called
(A) drilling
(B) reaming
(C) boring
(D) counter boring
6. . The process of cutting thread inside a hole is called
(A) tapping
(B) drilling
(C) rolling
(D) reaming
7. . The size of a twist drill is determined by
(A) diameter
(B) length
(C) lips
(D) none of above
8. . Types of twist drills according to shank
(A) one
(B) two
(C) three
(D) four
9. . What is used to check the diameter of a twist drill?
(A) point gauge
(B) drill drift
(C) drill gauge
(D) ring gauge
10. . This part of a drill saves its body from excessive friction
(A) tang
(B) lip clearance
(C) margin
(D) lip
11. . The operation of transforming the already drilled hole into a conical hole is called
(A) drilling
(B) boring
(C) counter boring
(D) counter sinking
12. . The point at which cutting lips of twist drill meet with each other is
(A) dead center
(B) neck
(C) shank
(D) flute
13. . If diameter of drill is increased, the cutting speed will
(A) decrease
(B) increase
(C) remain constant
(D) none of above
14. . The value of lip clearance of twist drill is
(A) 59°
(B) 118°
(C) 8°-12°
(D) 60°
15. . The cutting speed of drill machine depends upon
(A) column length
(B) diameter of drill
(C) rpm of drill
(D) both b&c