| 1. | Which one of the following features refer to vitrified bonded wheel ? | |
|
used for large bonds due to dense stretch
|
||
|
used for large bonds due to elastic stretch
|
||
|
not sensitive to shock and pressure
|
||
|
suitable for wet and dry grinding
|
||
View Answer
Discuss in Forum
Report Question| 2. | It is required to finish grind a diameter, 50 mm hardened steel shaft on a cylindrical grinding machine. If the recommended surface speed of the work is 33 m/min. Then rpm of the work is ___________ ? | |
|
150
|
||
|
190
|
||
|
210
|
||
|
250
|
||
| 3. | It is required to finish grind a 50 mm mild steel shaft on a cylindrical grinding machine. What will be the surface speed if rpm of the job is 191 ? | |
|
20 m/min
|
||
|
25 m/min
|
||
|
30 m/min
|
||
|
35 m/min
|
||
| 4. | Grinding with a balanced grinding wheel will make it possible to achieve the required ? | |
|
dimensional accuracy with surface finish
|
||
|
positional tolerance surface finish only
|
||
|
positional tolerance
|
||
|
pattern of lay
|
||
| 5. | you have to select a grinding wheel with suitable abrasive to grind glass. What is the type of abrasive you will select ? | |
|
diamond
|
||
|
corundum
|
||
|
emery
|
||
|
all of these
|
||
| 6. | Which one of the following is not the cause for glazing of the wheel ? | |
|
improper dressing of wheel
|
||
|
dirty coolant
|
||
|
use of hard wheel in place of soft wheel
|
||
|
feed rate is to fine
|
||
| 7. | The grip with which the bond holds the abrasive is know as ? | |
|
grain size
|
||
|
structure of the grinding wheel
|
||
|
grade of the grinding wheel
|
||
|
types of abrasive
|
||
| 8. | If the grit size of a grinding wheel is large it indicates ? | |
|
the abrasive grain size is large
|
||
|
the abrasive grain size is small
|
||
|
has no relation to abrasive grain size
|
||
|
it indicates the diameter of grinding wheel
|
||
| 9. | The property of a good abrasive material are ? | |
|
it should have high ductility and plasticity
|
||
|
it should have high hardness and toughness
|
||
|
should have low resistance to fracture
|
||
|
easily malleable
|
||
| 10. | Which of the following is a precision grinding machine type ? | |
|
tool and cutter grinding machine
|
||
|
hand grinding machine
|
||
|
flexible shaft grinding machine
|
||
|
abrasive belt grinding machine
|
||