Civil Engineering MCQs

Page No. 271

For which of the following permanent adjustments of theodolite, the spire test is used ?


aadjustment of plate levels


badjustment of line of sight


c adjustment of horizontal axis


dadjustment of altitude bubble and vertical index frame



If the lower clamp screw is tightened and upper clamp screw is loosened, the theodolite may be rotated____________?


aon its outer spindle with a relative motion between the vernier and graduated scale of lower plate


bon its outer spindle without a relative motion between the vernier and gra-duated scale of lower plate


con its inner spindle with a relative motion between the vernier and the graduated scale of lower plate


don its inner spindle without a relative motion between the vernier and the graduated scale of lower plate



Size of a theodolite is specified by________________?


athe length of telescope


bthe diameter of vertical circle


cthe diameter of lower plate


d the diameter of upper plate



A telescope is said to be inverted if its______________?


avertical circle is to its right and the bubble of the telescope is down


b vertical circle is to its right and the bubble of the telescope is up


cvertical circle is to its left and the bubble of the telescope is down


d vertical circle is to its left and the bubble of the telescope is up



Which of the following is not the function of levelling head ?


a to support the main part of the instrument


b to attach the theodolite to the tripod


c to provide a means for leveling the theodolite


dnone of the above


View Answer none of the above

The process of turning the telescope about the vertical axis in horizontal plane is known as______________?


atransiting


breversing


cplunging


d swinging


View Answer swinging

The graduations in prismatic compass_____________?


aare inverted


bare upright


c run clockwise having 0° at south


drun clockwise having 0° at north


View Answer (1) and (3)

If the magnetic bearing of the sun at a place at noon in southern hemisphere is 167°, the magnetic declination at that place is________________?


a77° N


b23° S


c13° E


d13° W


View Answer 13° E

Agate cap is fitted with a_________________?


across staff


blevel


cchain


d prismatic compass


View Answer prismatic compass

A negative declination shows that the magnetic meridian is to the________________?


a eastern side of the true meridian


bwestern side of the true meridian


csouthern side of the true meridian


d none of the above



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