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

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
by

1 Answer

Answer :

(D) All the above
by

Related questions

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

Description : 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 ( ... whole circle bearings (D) It is provided with a prism to facilitate reading of its graduated circle

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

The vertical angle between longitudinal axis of a freely suspended magnetic needle and a horizontal line at its pivot, is known (A) Declination (B) Azimuth (C) Dip (D) Bearing

Description : The vertical angle between longitudinal axis of a freely suspended magnetic needle and a horizontal line at its pivot, is known (A) Declination (B) Azimuth (C) Dip (D) Bearing

Last Answer : (C) Dip

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

Description : 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 

Last Answer : (C) South end

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

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

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.

State the functions of needle, glass cover, pivot and adjustable mirror of a compass.

Description : State the functions of needle, glass cover, pivot and adjustable mirror of a compass.

Last Answer : Needle: To direct north-south direction or to give magnetic meridian. Glass cover: To prevent entry of dust in box and movement of needle due to air or wind. Pivot: To support and balance the ... it is in use. Adjustable mirror: For sighting object at high or below level of observer's eye.

The magnetic meridian at any point, is the direction indicated by a freely suspended (A) Magnetic needle (B) And properly balanced magnetic needle (C) Properly balanced and uninfluenced by local attractive force (D) Magnetic needle over an iron pivot

Description : The magnetic meridian at any point, is the direction indicated by a freely suspended (A) Magnetic needle (B) And properly balanced magnetic needle (C) Properly balanced and uninfluenced by local attractive force (D) Magnetic needle over an iron pivot

Last Answer : (C) Properly balanced and uninfluenced by local attractive force

The depth of centre of pressure (h) for a vertically immersed surface from the liquid surface is given by (where IG = Moment of inertia of the immersed surface about horizontal axis through its centre of gravity, A = Area of immersed surface, and x = Depth of centre of gravity of the immersed surface from the liquid surface) (A) (IG/ ) - (B) (IG/ ) - (C) ( /IG) + (D) (IG/ ) +

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Last Answer : Answer: Option D

In a tug of war, five men pull a rope to the left at A and six moen pull the rope at B. A weight of 5 kg is hung vertically from the centre of the rope. In order that the rope AB be horizontal a.the force applied on A must be equal to that on B b.at least one man on side B should be removed c.infinite force will be required to be applied at both ends d.the force required on A must not be equal to that on B e.107 dynes

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Last Answer : c. infinite force will be required to be applied at both ends

Pick up the correct statement from the following: (A) For channels, the shear centre does not coincide its centroid (B) The point of intersection of the bending axis with the cross section of the beam, is called shear centre (C) For I sections, the shear centre coincides with the centroid of the cross section of the beam (D) All the above

Description : Pick up the correct statement from the following:  (A) For channels, the shear centre does not coincide its centroid  (B) The point of intersection of the bending axis with the cross section ... shear centre coincides with the centroid of the cross section of the beam  (D) All the above

Last Answer : (D) All the above

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

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

Last Answer : (c) Needle bearing

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Last Answer : (D) All the above

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

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

Last Answer : Magnetic Force

In chain surveying, perpendiculars to the chain line are set out by (A) A theodolite (B) A prismatic compass (C) A level (D) An optical square

Description : In chain surveying, perpendiculars to the chain line are set out by (A) A theodolite (B) A prismatic compass (C) A level (D) An optical square

Last Answer : (D) An optical square

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

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

In the triaxial compression test, the application of additional axial stress (i.e. deviator stress) on the soil specimen produces shear stress on (A) Horizontal plane only (B) Vertical plane only (C) Both horizontal and vertical planes (D) All planes except horizontal and vertical planes

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Last Answer : (D) All planes except horizontal and vertical planes

How does the magnetic compass needle behave in a magnetic field ?

Last Answer : It assures a position which follows a line of magnetic flux

Pick up the correct statement from the following: (A) The horizontal angle between magnetic meridian and true meridian at a place is called magnetic declination or variance of the compass (B) The imaginary lines which pass through points at which the magnetic declinations are equal at a given time are called isogonic lines (C) The isogonic lines through places at which the declination is zero are termedagonic lines (D) All the above

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Last Answer : (D) All the above

In a theodolite the line passing through the intersection of the horizontal and vertical cross hairs and the optical centre of the object glass and its continuation, is known as (a) Horizontal axis (b) Vertical axis (c) Line of collination (d) Line of sight (e) Either of c or d above*

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Last Answer : e) Either of c or d above*

Pick up the correct statement from the following: (A) In the earth's magnetic field, a magnetic needle rests in magnetic meridian (B) The angle between the true meridian and the magnetic meridian is called magnetic variation (C) One end of the magnetic needle supported at its centre of gravity tends to dip down towards the nearer magnetic pole of the earth (D) All the above

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While rotating the theodolite in the horizontal plane, the bubble of the bubble tube takes up the same position in its tube, it indicates (A) The rotation axis is vertical (B) The trunnion axis is horizontal (C) The line of collimation is perpendicular to vertical axis (D) None of the above

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Last Answer : (A) The rotation axis is vertical

The survey instrument used for reconnaissance survey (a) Theodelite & Dumpty level (b) Prismatic compass & Aneriod barometer* (c) All the above (d) None of them

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Last Answer : (b) Prismatic compass & Aneriod barometer*

Which of the instruments is not used in Reconnaissance survey. (a) Prismatic compass (b) Dumpy level * (c) Aneroid Barometer (d) Pedometer

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List any eight component parts of prismatic compass with their function in brief.

Description : List any eight component parts of prismatic compass with their function in brief.

Last Answer : Component parts of compass with their function. Sr.No Component Function 1 Circular metal box  To protect needle and pivot. 2 Steel pivot To carry magnetic ... prism to eye sight of observer 14 Magnetic needle To obtain the north direction. 

Explain the temporary adjustments of prismatic compass.

Description : Explain the temporary adjustments of prismatic compass.

Last Answer : Temporary Adjustments of Prismatic Compass 1. Fixing the compass to the tripod The compass is fixed on a tripod by rotating screw head of tripod stand. 2. Centering the compass The prismatic compass ... prism is moved using focusing stud so that readings on graduated ring will be seen clearly. 

State temporary adjustments of prismatic compass

Description : State temporary adjustments of prismatic compass

Last Answer : a) Setting the prismatic compass over prefixed survey station b) Centering the compass over nail point of station using plumb bob c) Leveling of compass in horizontal plane using level tube d) Focusing of prism by raising and lowering the focussing stud

Write the functions of the following components of prismatic compass i) Prism, ii) Lifting pin, iii) Prism cap, iv) Agate cap

Description : Write the functions of the following components of prismatic compass i) Prism, ii) Lifting pin, iii) Prism cap, iv) Agate cap

Last Answer : i) Prism: Reading printed on horizontal face of compass ring can be read from vertical position  ii) Lifting pin: When the instrument not in use the sight vane passes against the lifting pin which lift ... piece of hard glass provided on top of pivoted point, to reduce wear and tear of the point

State any eight component parts with its functions of prismatic compass.

Description : State any eight component parts with its functions of prismatic compass. 

Last Answer : Component parts of prismatic compass are as follows. 1. Break pin - It is used to stop the oscillations of aluminum ring. 2. Lifting pin - It lifts the magnetic needle when sight vane is folded. ... and sighting vane when the compass is not in use to protect the compass from dirt, dust etc.

State the meaning of local attraction and state its effect on prismatic compass and how it taken care of.

Description : State the meaning of local attraction and state its effect on prismatic compass and how it taken care of. 

Last Answer : Local attraction: It is the deviation or deflection of magnetic needle from its normal position under influence of external magnetic forces is called as local attraction.  Effect on prismatic compass: ... compass. 3) If local attraction still persists, it is corrected by mathematical calculation. 

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

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Last Answer : Sketch of prismatic compass and label its component parts

Draw labeled sketch of prismatic compass.

Description : Draw labeled sketch of prismatic compass.

Last Answer : Sketch of prismatic compass :

State the function of reflecting mirror in prismatic compass.

Description : State the function of reflecting mirror in prismatic compass. 

Last Answer : Function of reflecting mirror is to get image of an object located above or below the instrument level while bisection.

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Last Answer : (D) All the above

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Last Answer : (D) Horizontal and vertical components at both the ends 

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Last Answer : c. Parallel in horizontal

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Last Answer : (a) Increased towards the centre of the span of the beam

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Last Answer : (D) All the above

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Last Answer : (D) All the above

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Last Answer : (D) All the above

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