MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Ic Engine knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
For_a_compressor_process_with_variable_specific_heat_the_peak_temperature_and_pressure_are$ |
| A. | lower |
| B. | higher |
| C. | no effect |
| D. | none of the mentioned |
| Answer» B. higher | |
| 2. |
For a given compression ratio, as the mixture is made progressively rich from lean the mean effective pressur? |
| A. | increases |
| B. | decreases |
| C. | initially increases then decreases |
| D. | remains more or less same |
| Answer» D. remains more or less same | |
| 3. |
With dissociation the exhaust gas pressure |
| A. | decreases |
| B. | increases |
| C. | no effect |
| D. | increases upto certain air fuel ratio and then decreases |
| Answer» B. increases | |
| 4. |
With dissociation, peak temperature is obtained |
| A. | at the stoichiometric ratio |
| B. | when the mixture is slightly lean |
| C. | when the mixture is slightly rich |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 5. |
Maximum dissociation is for |
| A. | lean mixture |
| B. | rich mixture |
| C. | stoichiometric |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 6. |
Power output is maximum at stoichiometric ratio where there is |
| A. | dissociation |
| B. | no dissociation |
| C. | rich mixture |
| D. | none of the mentioned |
| Answer» C. rich mixture | |
| 7. |
In rich mixtures dissociation is prevented by the available |
| A. | CO |
| B. | CO<sub>2</sub> |
| C. | O<sub>2</sub> |
| D. | CO and O<sub>2</sub> |
| Answer» E. | |
| 8. |
In lean mixtures no dissociation takes place at_____________ temperatures. |
| A. | low |
| B. | high |
| C. | constant |
| D. | none of the mentioned |
| Answer» B. high | |
| 9. |
Dissociation is the disintegration of burnt gases at __________ temperatures. |
| A. | low |
| B. | high |
| C. | constant |
| D. | none of the mentioned |
| Answer» C. constant | |