MCQOPTIONS
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MCQOPTIONS
This section includes 25 Mcqs, each offering curated multiple-choice questions to sharpen your Design Electrical Machines knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
In gear boxes and small size motors, rolling contact bearings are used. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Anti-friction bearings are lubricated by charcoal. |
| A. | true |
| B. | false |
| Answer» C. | |
| 3. |
The phosphor bronze sleeve bearings are used for the small electrical machines. |
| A. | true |
| B. | false |
| Answer» B. false | |
| 4. |
What is the other name of the bearings outside the machine? |
| A. | ball bearing |
| B. | pedestal bearing |
| C. | guide bearing |
| D. | gear bearing |
| Answer» C. guide bearing | |
| 5. |
Where are the bearings for the horizontal shaft placed? |
| A. | outside the machine |
| B. | in the end shields of the machine |
| C. | outside the machine or in the end shields of the machine |
| D. | outside the machine and in the end shields of the machine |
| Answer» D. outside the machine and in the end shields of the machine | |
| 6. |
MODULUS_OF_RESILIENCE_IS_DEFINED_AS?$ |
| A. | Strain energy per unit volume |
| B. | Strain energy per unit area |
| C. | Independent of strain energy |
| D. | None of the mentioned |
| Answer» B. Strain energy per unit area | |
| 7. |
WHAT_IS_THE_OTHER_NAME_OF_THE_BEARINGS_OUTSIDE_THE_MACHINE??$ |
| A. | ball bearing |
| B. | pedestal bearing |
| C. | guide bearing |
| D. | gear bearing |
| Answer» C. guide bearing | |
| 8. |
Anti-friction bearings are lubricated by charcoal ?$ |
| A. | true |
| B. | false |
| Answer» C. | |
| 9. |
In_gear_boxes_and_small_size_motors,_rolling_contact_bearings_are_used.$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
The_phosphor_bronze_sleeve_bearings_are_used_for_the_small_electrical_machines_?$ |
| A. | true |
| B. | false |
| Answer» B. false | |
| 11. |
Which of the following facts are true for resilience? |
| A. | Ability of material to absorb energy when deformed elastically |
| B. | Ability to retain deformation under the application of load or after removal of load |
| C. | Ability of material to absorb energy when deformed plastically |
| D. | None of the mentioned |
| Answer» B. Ability to retain deformation under the application of load or after removal of load | |
| 12. |
Where are the bearings for the horizontal shaft placed ? |
| A. | outside the machine |
| B. | in the end shields of the machine |
| C. | outside the machine or in the end shields of the machine |
| D. | outside the machine and in the end shields of the machine |
| Answer» D. outside the machine and in the end shields of the machine | |
| 13. |
Which of the following is measure of stiffness? |
| A. | Modulus of elasticity |
| B. | Modulus of plasticity |
| C. | Resilience |
| D. | Toughness |
| Answer» B. Modulus of plasticity | |
| 14. |
How many guide bearings are used along with the simple thrust bearings to pick up radial loads? |
| A. | 2 |
| B. | 3 |
| C. | 2 or 3 |
| D. | 4 |
| Answer» D. 4 | |
| 15. |
Which of the following are true about plasticity? |
| A. | Permanent Deformation |
| B. | Ability to retain deformation under load or after removal of load |
| C. | Plastic deformation is greater than elastic deformation |
| D. | All of the mentioned |
| Answer» E. | |
| 16. |
What is the additional setup provided to the simple thrust bearing when it is not able to take up radial loads? |
| A. | ball bearing |
| B. | gear bearing |
| C. | steel bearing |
| D. | guide bearing |
| Answer» E. | |
| 17. |
In steam and gas turbines, rolling contact bearings are used. |
| A. | True |
| B. | False |
| Answer» C. | |
| 18. |
How are the radial loads caused? |
| A. | dynamic unbalance of rotor |
| B. | unbalanced magnetic pull of rotor |
| C. | dynamic unbalance of rotor or unbalanced magnetic pull of rotor |
| D. | dynamic unbalance of rotor and unbalanced magnetic pull of rotor |
| Answer» D. dynamic unbalance of rotor and unbalanced magnetic pull of rotor | |
| 19. |
Sliding contact bearings, also called plain bearings have no problem of wear. |
| A. | True |
| B. | False |
| Answer» C. | |
| 20. |
In vertical shaft machines, which load is taken up by the thrust bearings? |
| A. | perpendicular load acting upwards |
| B. | perpendicular load acting downwards |
| C. | axial load acting upwards |
| D. | axial load acting downwards |
| Answer» E. | |
| 21. |
A_______ bearing supports the load acting along the axis of the shaft. |
| A. | Thrust |
| B. | Radial |
| C. | Longitudinal |
| D. | Transversal |
| Answer» B. Radial | |
| 22. |
In horizontal shaft machines, the forces acting in which direction is prominent? |
| A. | circular |
| B. | vertical |
| C. | horizontal |
| D. | radial |
| Answer» E. | |
| 23. |
A radial bearing supports the load that acts along the axis of the shaft. |
| A. | True |
| B. | False |
| Answer» C. | |
| 24. |
What is the plain bearing used? |
| A. | sleeve bearings |
| B. | anti friction bearing |
| C. | sleeve or anti friction bearing |
| D. | sleeve and anti friction bearing |
| Answer» D. sleeve and anti friction bearing | |
| 25. |
What bearing is made use of in the horizontal shaft machines? |
| A. | plain bearing |
| B. | thrust bearing |
| C. | push bearing |
| D. | throw bearing |
| Answer» B. thrust bearing | |