MCQOPTIONS
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MCQOPTIONS
This section includes 112 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Tools knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Facing sand used in foundry work comprises of _______. |
| A. | alumina, silica and clay |
| B. | silica and clay |
| C. | silica and alumina |
| D. | clay an alumina |
| Answer» C. silica and alumina | |
| 102. |
A pressure die casting setup was tested by injecting water (density 1000 kg/m3) at a pressure of 200 bar. Mould-filling time was found to be 0.05 s. Afterwards, the actual casting is made by injecting the liquid metal (density 2000 kg/m3) at an injection pressure of 400 bar. Neglect all losses (friction, viscous-effect, etc.). The approximate mould-filling time (in s) is: |
| A. | 0.05 |
| B. | 0.075 |
| C. | 0.1 |
| D. | 0.2 |
| Answer» B. 0.075 | |
| 103. |
WHICH_OF_THE_FOLLOWING_COMPONENT_GIVES_THE_NECESSARY_PLASTICITY_TO_SAND??$ |
| A. | silica |
| B. | clay |
| C. | moisture |
| D. | all of the mentioned |
| Answer» C. moisture | |
| 104. |
The_mould_material_used_for_moulding_is_a_granite.$ |
| A. | true |
| B. | false |
| Answer» C. | |
| 105. |
Which of the following provide cohesion among the sand particles? |
| A. | clay and moisture |
| B. | clay and silica |
| C. | moisture and silica |
| D. | none of the mentioned |
| Answer» B. clay and silica | |
| 106. |
Chills are used to increase the heating rate of metal.. |
| A. | true |
| B. | false |
| Answer» C. | |
| 107. |
The upper portion of the casting flask is known as cope. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 108. |
Why the porous structure provided by the silica is necessary in casting process? |
| A. | for the escape of gases |
| B. | for the escape of vapors |
| C. | for the escape of both gases and vapors |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 109. |
Which of the following component withstand the high temperature in |
| A. | |
| B. | clay |
| C. | moisture |
| Answer» D. | |
| 110. |
Which of the following is the component of foundry sand? |
| A. | river sand |
| B. | clay |
| C. | moisture |
| D. | all of the mentioned |
| Answer» E. | |
| 111. |
The casting can be defined as pouring of molten metal into a mould |
| A. | |
| B. | true |
| Answer» C. | |
| 112. |
Which type of metal is used in casting process? |
| A. | liquid |
| B. | solid |
| C. | gas |
| D. | plastic |
| Answer» B. solid | |