| 1. | The angle of intersection of the horizon glass and index glass in an optical square is ? | |
|
30°
|
||
|
60?
|
||
|
45?
|
||
|
75?
|
||
View Answer
Discuss in Forum
Report Question| 2. | To the sum of the first and last ordinates, add twice the sum of the intermediate ordinates. The total sum thus obtained is multiplied by the common distance between the ordinates. One-half of this product gives the required area. This rule of finding the area is called ? | |
|
Simpson's rule
|
||
|
mid-ordinate rule
|
||
|
average ordinate rule
|
||
|
trapezoidal rule
|
||
| 3. | Compensating errors that occur in chaining are proportional to ? | |
|
L
|
||
|
root L
|
||
|
1/L
|
||
|
1/root L
|
||
| 4. | To the sum of the first and last ordinates, add twice the sum of the remaining odd ordinates and four times the sum of all the even ordinates. The total sum thus obtained is multiplied by one-third of the common distance between the ordinates and the result gives the required area. This rule of finding the area is called ? | |
|
mid-ordinate rule
|
||
|
Simpson's rule
|
||
|
trapezoidal rule
|
||
|
average ordinate rule
|
||
| 5. | In an optical square, the angle between the first incident ray and the last reflected ray is ? | |
|
150?
|
||
|
60°
|
||
|
90?
|
||
|
120?
|
||
| 6. | When the whole circle bearing of two lines AB and AC are 115? and 41° respectively, the included angle BAC will be ? | |
|
41°
|
||
|
74°
|
||
|
115?
|
||
|
156?
|
||
| 7. | At the equator, the amount of dip is ? | |
|
0?
|
||
|
90?
|
||
|
45?
|
||
|
60°
|
||
| 8. | The correction to be applied to each 30 m chain for a line measured along a slope of 0 is ? | |
|
30 (1-cot ?)
|
||
|
30 (1-sin ?)
|
||
|
30 (1-cos ?)
|
||
|
30 (1-tan ?)
|
||
| 9. | Contour lines cross ridge or valley lines at ? | |
|
90?
|
||
|
60?
|
||
|
30°
|
||
|
45?
|
||
| 10. | The method of levelling in which the heights of mountains are found by observing the temperature at which water boils is known as ? | |
|
hypometry
|
||
|
barometric levelling
|
||
|
reciprocal levelling
|
||
|
longitudinal levelling
|
||