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In a region with magnetic declination of 2°E, the magnetic Fore bearing (FB) of a line AB was measured as N79°50’E. There was local attraction at A. TO determined the correct magnetic bearing of the line, a point O was selected at which there was no local attraction. The magnetic FB of line AO and OA were observed to be S52° 40’E and N50°20’W, respectively. What is the true FB of line AB?
In a compass survey work of an open traverse ABCDE shown in the figure, the bearing of the first line AB observed was not clearly written in the field. The observed bearing of the last line DE was recorded as S36°40’E. If the deflection angles are 31°50' (right) at D, 42°30' (right) at C, and 18°20' (left) at B. calculate the bearing of the first line AB.
The rate of change of angular speed is constant. What will be the expression for change in angular speed after time dt, if angular acceleration is ‘a’? The initial angular speed is ‘w’.
A rigid body is rotating about its centre of mass; fixed at origin with an angular velocity $$\overrightarrow \omega $$ and angular acceleration $$\overrightarrow \alpha $$. If the torque acting on it is $$\overrightarrow \tau $$ and its angular momentum is $$\overrightarrow {\bf{L}} $$, then the rate of change of its kinetic energy is
Which of the following are the functions of lubrication in a bearing unit ? 1. To protect the bearing components from corrosion. 2. To absorb heat from the bearing unit. 3. To carry heat away from the bearing unit. Select the correct answer using the code given below
Consider the following two statements regarding Bearing stiffeners provided at the location of a concentrated load: 1. Bearing stiffeners have to resist bearing and buckling loads. 2. Bearing area and the area resisting buckling load are the same. Which of the above statements is/are correct ?
A rotor which is balanced statically but not dynamically is supported on two bearings L apart and at high speed of the rotor, reaction on the left bearing is R. The right side of the bearing is shifted to a new position 2L apart from the left bearing. At the same rotor speed, dynamic reaction on the left bearing in the new arrangement will
The whole circle bearing of a line measured is 135o. The reduced bearing of line is:
The bearing of a line AB is 150°15' and the angle ABC between line AB and BC is 110°30' as shown in the given figure. What is the bearing of line BC?
Deuteron in its ground state has a total angular momentum J = 1 and a positive parity. The corresponding orbital angular momentum L and spin angular momentum S combinations are