A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.For each of the following multiple choice questions, choose the most appropriate answer :
1. A 1.5mm displacement of tool point in boring operation will result in a change in the diameter equal to?
A. 0.75 mm
B. 1.5 mm
C. 3 mm
D. 6 mm
2. A main purpose of using worm and worm wheel drives in machines and their accessories is to?
A. Transmit large torque
B. Provide large speed reduction from worm shaft to worm wheel
C. Transmit higher speeds
D. Provide large speed reduction from worm wheel to worm shaft
3. A traveling steady is fixed on the saddle of a Lathe. What is the function of this steady rest?
A. To prevent bending of long shafts due to cutting forces
B. To avoid load on the lathe centres while turning long
C. To reduce the load on the cutting tool while turning
D. To enables to turn at higher cutting speeds than recommended
4. Which country has granted temporary asylum to Edward Joseph Snowden who leaked details of the US program of mass surveillance of electronic data
A. Ecuador
B. Hong Kong
C. China
D. Russia
5. How much energy will be required to heat one gm of water from 30 deg C to 40 deg C:
A. 10 Kilo Calories
B. 10 Calories
C. 10 Watts
D. 10 Btu
6. Who drafted the Declaration of American Independence?
A. George Washington
B. Abraham Lincoln
C. Thomas Jefferson
D. Jhon F Kennedy
7. Which is the correct expression for the unit of feed rate in milling?
A. m/min
B. mm/rev
C. mm/sec
D. mm/min
8. A gear wheel has 36 teeth and 3 mm module, its pitch diameter is?
A. 12 mm
B. 75 mm
C. 80 mm
D. 108 mm
9. In a planning machine the depth of cut is given by?
A. Adjusting tool slide
B. Rotating the feed screw of the tool holder
C. Moving cross slide
D. Lifting the work piece
10. Various alloying elements are added to produce different alloy steels, which one of the following combination of alloying elements is using for HSS?
A. Chromium, nickel and molybdenum
B. Nickel, molybdenum and silicon
C. Chromium, vanadium and maganese
D. Chromium, vanadium and tungsten
11. The tensile strength of a metal is its ability to resist fracture when subjected to tensile loads, the tensile strength of metals are expressed in?
A. N/mm sq.
B. Kg/mm sq.
C. N. Metre
D. Kg. Metre
12. Zero setting of the two point bore dial gauge before the measurement is necessary to?
A. Account for the errors in the gauge
B. Facilitate comparison
C. Setup initial pressure in the gauge
D. Eliminate inaccuracy of the measurement
13. A steel workpiece of height tensile strength is to be machined with a HSS milling cutter, which one of the following rake angles is best suited for the cutter?
A. 8"
B. 12"
C. 20"
D. 28"
14. Which taper is used on spindle nose of the lathe head stock?
A. Jerno taper
B. Brown and sharp taper
C. Pin taper
D. Morse taper
15. Morse taper is one of the internationally accepted standard tapers. The morse taper are available in numbers from?
A. 0 to 7
B. 0 to 8
C. 1 to 7
D. 1 to 8
16. In a shaping machine with mechanical driven ram the ram speed is not uniform?
A. At the beginning of the cutt9ing stroke
B. In the middle of the cutting stroke
C. At the end of the return stroke
D. In the middle of the return stroke
17. Rough and finish boring operations are carried out to machine a hole in a milling machine, for rough boring select?
A. High spindle speed and coarse feed
B. slow spindle speed and coarse feed
C. slow spindle speed and fine feed
D. High spindle speed and fine feed
18. Which gear arrangement used to change the circular motion of horizontal to vertical without change in speed ratio?
A. Two spur gear
B. Two helical gear
C. Two bevel gear
D. Worm and worm gear
19. By using quick return mechanism in shaping machine the cutting stroke moves slow and return stroke fast. what is the ratio between cutting stroke and return stroke?
A. 2:3
B. 3:2
C. 5:3
D. 3:5
20. A finish cut is given to improve the surface finish of a rough milled workpiece?
A. Decrease cutting speed, feed rate and depth of cut
B. Increase feed rate, depth of cut and reduce cutting speed
C. Increase feed rate, depth of cut and cutting speed
D. Increase cutting speed, reduce feed rate and depth of cut
Dr K Chaudhry 5 Alpha Inmternational City, Fatehabad 125050 M: 9810570740, 9810571993facebook.com/doctorkc