MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The compound that can be most readily sulphonated is ___________ |
| A. | Benzene |
| B. | Nitrobenzene |
| C. | Toluene |
| D. | Chlorobenzene |
| Answer» D. Chlorobenzene | |
| 2. |
HBr reacts fastest with ___________ |
| A. | 2-methylpropan-2-ol |
| B. | Propan-1-ol |
| C. | Propan-2-ol |
| D. | 2-methylpropan-1-ol |
| Answer» B. Propan-1-ol | |
| 3. |
Which of the following has the highest activation of the benzene ring? |
| A. | – NHCOCH3 |
| B. | –OH |
| C. | –NH2 |
| D. | –C6H5 |
| Answer» D. –C6H5 | |
| 4. |
The most stable carbonium ion is ___________ |
| A. | Methyl carbonium ion |
| B. | 20 carbonium ion |
| C. | 10 carbonium ion |
| D. | 30 carbonium ion |
| Answer» E. | |
| 5. |
Which of the following is a meta directing group? |
| A. | –NHCOCH3 |
| B. | –COOH |
| C. | –OH |
| D. | –OCH3 |
| Answer» C. –OH | |
| 6. |
A deactivating substituent group directs ___________ |
| A. | Ortho position |
| B. | Para position |
| C. | Both ortho and para positions |
| D. | Meta position |
| Answer» E. | |
| 7. |
An activating substituent group activates ___________ |
| A. | Ortho position |
| B. | Para position |
| C. | Both ortho and para positions |
| D. | Meta position |
| Answer» C. Both ortho and para positions | |
| 8. |
Baking is required for the cores produced by the shell core making method. |
| A. | True |
| B. | False |
| Answer» C. | |
| 9. |
____________ is the oldest binder used in making cores. |
| A. | Coal tar |
| B. | Dextrin |
| C. | Molasses |
| D. | Vegetable oil |
| Answer» E. | |
| 10. |
In centrifugal compressor, the diffuser converts _________ |
| A. | Kinetic energy into pressure energy |
| B. | Pressure energy into Kinetic energy |
| C. | Kinetic energy into Mechanical energy |
| D. | Mechanical energy into Kinetic energy |
| Answer» B. Pressure energy into Kinetic energy | |
| 11. |
In the ____________ heat transfer takes place between the exhaust gases and cool air. |
| A. | Intercooler |
| B. | Re-heater |
| C. | Regenerator |
| D. | Compressor |
| Answer» D. Compressor | |
| 12. |
In centrifugal compressor, power input varies as _________ |
| A. | directly as the speed ratio |
| B. | the square of speed ratio |
| C. | the cube of the speed ratio |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| 13. |
In the centrifugal compressor, total pressure varies _____________ |
| A. | directly as the speed ratio |
| B. | square of speed ratio |
| C. | cube of the speed ratio |
| D. | all of the mentioned |
| Answer» C. cube of the speed ratio | |
| 14. |
The ‘work ratio’ increases with _____________ |
| A. | increase in turbine inlet pressure |
| B. | decrease in compressor inlet temperature |
| C. | decrease in pressure ratio of the cycle |
| D. | all of the mentioned |
| Answer» E. | |
| 15. |
In gas turbine, what is the function of Re-heater? |
| A. | Heat inlet air |
| B. | Heat exhaust gases |
| C. | Heat air coming out of compressor |
| D. | Heat gases coming out of high pressure turbine |
| Answer» E. | |
| 16. |
In gas turbine, intercooler is placed _____________ |
| A. | before low pressure compressor |
| B. | in between low pressure compressor and high pressure compressor |
| C. | in between high pressure compressor and turbine |
| D. | none of the mentioned |
| Answer» C. in between high pressure compressor and turbine | |
| 17. |
Which symbol is used to change permissions for hidden files? |
| A. | . |
| B. | & |
| C. | $ |
| D. | * |
| Answer» B. & | |
| 18. |
Like chmod, chown and chgrp can also use ___ option. |
| A. | -R |
| B. | -r |
| C. | -x |
| D. | -i |
| Answer» B. -r | |
| 19. |
A user can change the group ownership of a file to another group to which he does not belong. |
| A. | True |
| B. | False |
| Answer» C. | |
| 20. |
Which command is used to change the group owner of the file? |
| A. | chown |
| B. | ch |
| C. | chgrp |
| D. | chmod |
| Answer» D. chmod | |
| 21. |
A file has a permission set as 777 ie rwxrwxrwx but the directory permissions are 400. If the user tries to delete the file, will he be able to do it? |
| A. | Yes |
| B. | No |
| Answer» C. | |
| 22. |
A file has a permission set as 000 i.e. — — —. Can the file be deleted? |
| A. | Yes |
| B. | No |
| Answer» B. No | |
| 23. |
What are the permission of file01 after executing this command? |
| A. | rwxrwxrwx |
| B. | rw-rw-rw |
| C. | r–r–r– |
| D. | r–r—-View Answer |
| Answer» B. rw-rw-rw | |
| 24. |
While changing permissions in an absolute manner, we explicitly set all the nine bits irrespective of the previous permissions of the file. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 25. |
Which is used to prioritise multiple requests? |
| A. | dual address mode |
| B. | single address mode |
| C. | arbitration |
| D. | chaining |
| Answer» D. chaining | |
| 26. |
Which of the following is also known as implicit address? |
| A. | dual address model |
| B. | single address model |
| C. | 1D model |
| D. | 2D model |
| Answer» C. 1D model | |
| 27. |
The received local ensemble average power of wideband and narrowband signals are ________ |
| A. | Different |
| B. | Equivalent |
| C. | Not dependent |
| D. | Double |
| Answer» C. Not dependent | |
| 28. |
Average power for a CW signal is _______ to average received power for a wideband signal in small scale region. |
| A. | Equivalent |
| B. | Two times |
| C. | Four times |
| D. | Ten times |
| Answer» B. Two times | |
| 29. |
The received power of a wideband signal fluctuates significantly when a receiver is moved about a local area. |
| A. | True |
| B. | False |
| Answer» C. | |
| 30. |
Small scale received power is ________ of average powers received in each multipath component. |
| A. | Log |
| B. | Exponential |
| C. | Multiplication |
| D. | Sum |
| Answer» E. | |
| 31. |
Impulse response does not play any role in characterization of the channel. |
| A. | True |
| B. | False |
| Answer» C. | |
| 32. |
Impulse response is a narrowband characterization. |
| A. | True |
| B. | False |
| Answer» C. | |
| 33. |
In a closed system, the fresh air supply is taken to the crankcase from the carburetor. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 34. |
All the lubricating oil, in normal course, should be filtered approximately every minute. |
| A. | True |
| B. | False |
| Answer» C. | |
| 35. |
In full flow type filter arrangement, whole of the oil is filtered before it is supplied to various bearings. |
| A. | True |
| B. | False |
| Answer» C. | |
| 36. |
In the drip system oil is fed to machine parts drop by drop, from an oil cup. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 37. |
Mist lubrication system is used for ____________ stroke cycle engines. |
| A. | four |
| B. | two |
| C. | unpredictable |
| D. | none of the mentioned |
| Answer» C. unpredictable | |
| 38. |
At runtime, error is recoverable. |
| A. | True |
| B. | False |
| Answer» C. | |
| 39. |
Which of the following should be true of the object thrown by a thrown statement? |
| A. | Should be assignable to String type |
| B. | Should be assignable to Exception type |
| C. | Should be assignable to Throwable type |
| D. | Should be assignable to Error type |
| Answer» D. Should be assignable to Error type | |
| 40. |
Which part of code gets executed whether exception is caught or not? |
| A. | finally |
| B. | try |
| C. | catch |
| D. | throw |
| Answer» B. try | |
| 41. |
Which of the following keyword is used by calling function to handle exception thrown by called function? |
| A. | throws |
| B. | throw |
| C. | try |
| D. | catch |
| Answer» B. throw | |
| 42. |
Which of the following operators is used to generate instance of an exception which can be thrown using throw? |
| A. | thrown |
| B. | alloc |
| C. | malloc |
| D. | new |
| Answer» E. | |
| 43. |
Which of the following is a super class of all exception type classes? |
| A. | Catchable |
| B. | RuntimeExceptions |
| C. | String |
| D. | Throwable |
| Answer» E. | |
| 44. |
Which of the following classes can catch all exceptions which cannot be caught? |
| A. | RuntimeException |
| B. | Error |
| C. | Exception |
| D. | ParentException |
| Answer» C. Exception | |
| 45. |
Which coil is shorted in commutation process? |
| A. | Coil under north pole |
| B. | Coil under south pole |
| C. | Coil lying in an interpolar region |
| D. | Cannot be determined |
| Answer» D. Cannot be determined | |
| 46. |
How many coil sets undergo commutation simultaneously in a wave winding? |
| A. | 1 |
| B. | 2 |
| C. | 4 |
| D. | 3 |
| Answer» C. 4 | |
| 47. |
The process of current reversal takes place when the coil is passing through the interpolar region. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 48. |
In wave winding, P/2 coils are connected under the influence of “x” pole-pairs which connect adjacent segments. X is ____ |
| A. | P |
| B. | P/2 |
| C. | 2P |
| D. | P/4 |
| Answer» C. 2P | |
| 49. |
To achieve spark less commutation brushes of a DC generator are placed ________ |
| A. | just ahead of magnetic neutral axis |
| B. | in magnetic neutral axis |
| C. | just behind the magnetic neutral axis |
| D. | can be placed anywhere |
| Answer» B. in magnetic neutral axis | |
| 50. |
Water proof cement is prepared by mixing ordinary cement with: |
| A. | Resins |
| B. | Water repellent chemicals |
| C. | Sulpho-aminate |
| D. | Metal stearates |
| Answer» E. | |