MCQ Surveying 5

 91.An arbitrary surface with reference to which the elevation of points are measured and compared, is called ?

• datum surface 
• level surface 
• horizontal surface 
• vertical surface 

92.The image formed by the objective in the plane of cross hairs is and inverted ?

• real and straight 
• real and inverted 
• virtual and straight 
• virtual and inverted 

93.An imaginary line tangential to the longitudinal curve of the bubble tube at its middle point called ?

• axis of telescope 
• axis of level tube 
• level line 
• line of collimation 

94.The working from whole to the part is done in surveying in order to ensure that ?

• survey work is completed more quickly 
• number of errors is minimum 
• plotting is done more quickly 
• errors and mistakes of one portion do not affect the remaining portion 

95.The value of additive constant for the tachometer varies from ?

• 0 to 15 cm 
• 15 to 30 cm 
• 30 to 45 cm 
• 45 to 60 cm 

96.The reduced level of a point on the ground is called ?

• spot level 
• spot height 
• either (a) or (b) 
• none of these 

97.The height of instrument is equal to ?

• reduced level of bench mark + back sight 
• reduced level of bench mark + fore sight 
• reduced level of bench mark + intermediate 
• back sight + fore sight 

98.In a quadrantal system, the bearing of a line is measured ?

• always clockwise from the south point of the reference meridian towards the line right round the circle 
• clockwise or anticlockwise from the east or west whichever is nearer the line towards north or south 
• clockwise or anticlockwise from the north or south whichever is nearer the line towards east or west 
• none of the above 

99.The angle between the reflecting surfaces of a prism square is ?

• 30° 
• 45° 
• 60° 
• 75° 

100.A deflection angle is ?

• less than 90° 
• more than 90° but less than 180° 
• equal to the difference between the angle of intersection and 180° 
• equal to the difference between the angle of intersection and 360°.

101.Which of the following statement is correct ?

• The indirect ranging is resorted to when the ends of a line are not intervisible due to high ground 
• The chainman at the forward end of the chain is called leader 
• The line ranger is used for fixing intermediate points on the chain lines 
• all of the above 

102.In locating the details of an object whose direct measurement is not obstruction, the method used is possible due to ?

• by angles from two different stations 
• by distance from two different stations 
• by angle from one station and distance from the other station 
• by angles and distances from the same station 

103.The spacing of cross-sections in a hilly country is usually ?

• 20 m 
• 5 m 
• 10 m 
• 15 m 

104.When the angular measurements of a traverse are more precise than the linear measurements, the balancing of a traverse is done by ?

• Bowditch's rule 
• transit rule 
• empirical rule 
• any one of these 

105.The difference between the sum of the angles of a spherical triangle on the earth's surface and the angles of the corresponding plane triangle for every 195.5 km² of area is only ?

• 15 second 
• 10 second 
• 1 second 
• 5 second 

106.The principle of tacheometry is used ?

• for filling in detail in topographic surveys 
• on hydrographic surveys 
• for locating contours 
• all of these.

107.Which of the following statement is wrong ?

• The distance measured parallel to the north-south line is called latitude 
• The departure is negative when measured to the left or westward 
• The distance measured parallel to the east-west line is called departure of the line 
• The latitude is positive when measured downward or southward 

108.The tacheometric method of contouring is particularly suitable ?

• when the area is not very extensive 
• in surveys of roads or railways 
• when a contoured map of hill is required 
• all of these 

109.The fundamental principle of surveying is to work from the ?

• higher level to lower level 
• whole to the part 
• lower level to higher level 
• part to the whole 

110.When the angular and linear measurements are equally precise in traversing, the balancing of & traverse is done by ?

• Bowditch's rule 
• transit rule 
• any one of these 
• empirical rule.