Engineering :: Energy Conversion
|
|
|
|
|
|
| 401. |
The percentage of carbon in anthracite is generally |
| A. |
more than 90% |
B. |
around 75% |
| C. |
between 50% and 70% |
D. |
below 50% |
Answer: Option A
Explanation:
|
| 402. |
Gamma rays are |
| A. |
high energy, short wavelength electromagnetic radiation |
B. |
high energy, long wavelength electromagnetic wavelength |
| C. |
low energy, long wavelength electromagnetic radiation |
D. |
low energy, short wavelength electromagnetic radiation |
Answer: Option A
Explanation:
|
| 403. |
In geothermal power plants waste water is |
| A. |
recirculated after cooling in cooling towers |
B. |
discharged into sea |
| C. |
discharged back to earth |
D. |
evaporated in ponds |
Answer: Option C
Explanation:
|
| 404. |
Grade of the coal is the same as |
| A. |
ultimate analysis |
B. |
proximate analysis |
| C. |
orsat analysis |
D. |
rank |
Answer: Option D
Explanation:
|
| 405. |
API gravity of water is taken as |
Answer: Option B
Explanation:
|
| 406. |
Liquids lighter than water (such as petroleum oils) have API gravities numerically |
| A. |
less than 1.0 |
B. |
greater than 1.0 |
| C. |
greater than 10 |
D. |
around 100 |
Answer: Option A
Explanation:
|
| 407. |
Benefication process is mainly used for |
| A. |
coals |
B. |
oils |
| C. |
nuclides |
D. |
minerals |
Answer: Option A
Explanation:
|
| 408. |
Betz law finds application in |
| A. |
MHD systems |
B. |
Solar cells |
| C. |
Geothermal power plants |
D. |
Wind mills |
Answer: Option D
Explanation:
|
| 409. |
Cleat is |
| A. |
main joint in a coal seam along which it breaks most easily |
B. |
floor of a coal seam |
| C. |
carbon and sulphur compound |
D. |
crude oil containing low percentage of sulphur |
Answer: Option A
Explanation:
|
| 410. |
Coal broken into angular fragments is known as |
| A. |
coal briquettes |
B. |
coal breccia |
| C. |
coal bank |
D. |
coal auger |
Answer: Option B
Explanation:
|
Read more:
|
|
