Prismatic compass is considered more accurate than a surveyor's compass, because (A) It is provided with a better magnetic needle (B) It is provided with a sliding glass in the object vane (C) Its graduations are in whole circle bearings (D) It is provided with a prism to facilitate reading of its graduated circle

Prismatic compass is considered more accurate than a surveyor's compass, because
(A) It is provided with a better magnetic needle
(B) It is provided with a sliding glass in the object vane
(C) Its graduations are in whole circle bearings
(D) It is provided with a prism to facilitate reading of its graduated circle
by

1 Answer

Answer :

(D) It is provided with a prism to facilitate reading of its graduated circle
by

Related questions

Which one of the following statements is not correct ? (a) A surveyor’s compass has two sight vanes (b) A prismatic compass has an object vane and an eye vane (c) A trough compass is an accessory to a plane table (d) In a prismatic compass the graduations on the aluminimum disc rotate and the index remains stationary

Description : Which one of the following statements is not correct ? (a) A surveyor's compass has two sight vanes (b) A prismatic compass has an object vane and an eye vane (c) A trough compass ... table (d) In a prismatic compass the graduations on the aluminimum disc rotate and the index remains stationary

Last Answer : (a) A surveyor’s compass has two sight vanes

In a perfect prismatic compass (A) Magnetic axis and geometric axis of the needle coincide (B) Ends of the needle and pivot are in same vertical and horizontal planes (C) Pivot is vertically over the centre of the graduated circle (D) All the above

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Last Answer : (D) All the above

The zero of the graduated circle of a prismatic compass is located at (A) North end (B) East end (C) South end (D) West end

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Last Answer : (C) South end

Why zero is marked at south end on a graduated circle of prismatic compass?

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Last Answer : As bearing of any line is measured with respective north direction, while observing north direction, reading should be 00 0'. Therefore when object vane is bisecting north direction, at the same ... get bearings with respective north direction always, zero is marked at south end of magnetic needle.

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The needle of a magnetic compass is generally supported on a (a) Bush bearing (b) Ball bearing (c) Needle bearing (d) Jewel bearing

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If Veronica spins in a circle with the compass in her hand which force keeps the compass' needle pointing north?

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Draw a neat sketch of prismatic compass and label its component parts

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