1. In a crank and slotted lever mechanism, length of fixed link and crank is 250 mm and 100 mm respectively. Cutting angle in degrees is equal to
a) 47.2
b) 12.3
c) 56
d) 69.3
Explanation: Use simple geometry in a triangle to find cutting angle.Return stroke angle = 360 – cutting angle.
2. In a crank and slotted lever mechanism, length of fixed link and crank is 250 mm and 100 mm respectively. Return angle in degrees is equal to
a) 147.2
b) 112.3
c) 156
d) 132.8
Explanation: Use simple geometry in a triangle to find cutting angle. Return stroke angle = 360 – cutting angle
3. In a crank and slotted lever mechanism, length of fixed link and crank is 250 mm and 100 mm respectively. Length of stroke in mm will be
a) 447.2
b) 312.3
c) 56
d) 360.3
Explanation: Use simple geometry in a triangle to find cutting angle. Return stroke angle = 360 – cutting angle. Cutting angle = 47.2 degree.
4. Which of the following act as load bearing part of milling machine?
a) Base
b) Column
c) Knee
d) Table
Explanation: Base act as support in milling machine. It is made of very strong material and have good surface hardness.
5. Knee of milling machine is attached and slides up and down on
a) Base
b) Column
c) Knee
d) Table
Explanation: Knee slide over column. Column has motor drive attached to its rear side. Base can be used as reservoir for coolant.
6. Motor drive in milling machine is generally attached to
a) Base
b) Column
c) Knee
d) Table
Explanation: Column has the motor drive attached to its rear side. Base can be used as a reservoir for coolant. Knee slide over column.
7. Which of the following part of milling machine can be used for reservoir for coolant?
a) Base
b) Column
c) Knee
d) Table
Explanation: Base can be used as reservoir for coolant. Knee slide up and down on column.
8. Which of the following is capable of sliding up and down in milling machines?
a) Base
b) Column
c) Knee
d) Table
Explanation: Knee slide up and down on column. Knee adjusts table height by sliding up and down on a milling machine.
9. Which of the following part movement of milling machines helps in adjustment of table height?
a) Base
b) Column
c) Knee
d) Table
Explanation: Knee adjusts table height by sliding up and down on a milling machine. Knee slide up and down on column.
10. Which of the following part of the milling machine is used to support work piece?
a) Base
b) Column
c) Knee
d) Table
Explanation: Table is used to support work piece. Cast iron has very good surface hardness and hence used for table of milling machine.