MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Dynamics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If the secondary couple polygon is open and the force polygon is closed then stability is achieved. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
The numerical values of the secondary forces and secondary couples couples may be obtained by considering the ___________ |
| A. | Revolving mass |
| B. | Reciprocating mass |
| C. | Translating mass |
| D. | Rotating mass |
| Answer» B. Reciprocating mass | |
| 3. |
In a multicylinder inline engine, each imaginary secondary crank with a mass attached to the crankpin is inclined to the line of stroke at which angle? |
| A. | Twice the angle of crank |
| B. | Half the angle of crank |
| C. | Thrice the angle of crank |
| D. | Four times the angle of crank |
| Answer» B. Half the angle of crank | |
| 4. |
When the connecting rod is too long, secondary forces arise due to reciprocating masses. |
| A. | True |
| B. | False |
| Answer» C. | |
| 5. |
If the connecting rod is not too long, then which of the following phenomenon occurs? |
| A. | Secondary disturbing forces |
| B. | Primary disturbing forces |
| C. | Secondary stabilizing forces |
| D. | Primary stabilizing forces |
| Answer» B. Primary disturbing forces | |
| 6. |
In coupled locomotives, where are the coupling rod cranks placed with respect to the main crank? |
| A. | Diametrically opposite |
| B. | At 90 degrees |
| C. | At 60 degrees |
| D. | At 120 degrees |
| Answer» C. At 60 degrees | |
| 7. |
The variation of pressure between the wheel and the rail (i.e. hammer blow) may be reduced by _______ |
| A. | Equal distribution of balanced masses |
| B. | More mass towards driving wheel |
| C. | More mass towards trailing wheel |
| D. | More mass towards leading wheel |
| Answer» B. More mass towards driving wheel | |
| 8. |
Coupling rods with connecting rods and pins can be treated as ________ |
| A. | Rotating masses |
| B. | Masses in linear motion |
| C. | Reciprocating masses |
| D. | Massless |
| Answer» B. Masses in linear motion | |
| 9. |
In coupled locomotives, the coupling rod cranks are placed diametrically opposite to the adjacent ________ |
| A. | Driving cranks |
| B. | Driving rods |
| C. | Driving piston |
| D. | Driving valves |
| Answer» B. Driving rods | |
| 10. |
On connecting a wheel through outside coupling rod, which utility comes of use? |
| A. | Tractive |
| B. | Swaying |
| C. | Hammer |
| D. | Piston |
| Answer» B. Swaying | |
| 11. |
For a coupled locomotive, the driving wheels and the leading and trailing wheels are connected by an inside coupling rod. |
| A. | True |
| B. | False |
| Answer» C. | |
| 12. |
In a coupled locomotive, the driving wheels are connected to the leading and trailing wheels by a/an __________ |
| A. | Outside coupling rod |
| B. | Inside coupling rod |
| C. | Backside coupling rod |
| D. | Frontend coupling rod |
| Answer» B. Inside coupling rod | |