Pick up the correct statement from the following : the apparent error on reversa

CuriousTab

Home Aptitude

Question
Pick up the correct statement from the following :
Options
A. the apparent error on reversal is twice the actual error
B. the correction may be made equal to half the observed discrepancy.
C. the good results may be obtained from a defective instrument by reversing and taking the mean of two erroneous results
D. all the above.

Correct Answer

all the above.

3. One of the following statements is true with regards to bodies that float or are submerged in liquids :
Options
A. For a body wholly submerged in a liquid the stability is ensured if the centre of buoyancy is below the centre of gravity of the body
B. For a body floating in a liquid the stability is ensured if the centre of buoyancy is below the centre of gravity of the body
C. For a body floating in a liquid the stability is ensured if the centre of buoyancy and the centre of gravity, regardless of the relative positions of the centre of buoyancy and gravity
D. For a body floating in a liquid the stability is ensured if the centre of buoyancy is below the centre of gravity and the metacentre is above both the centres of gravity and buoyancy.

4. The thickness of the rectangular plate for the cap or base of a solid round steel columns, is calculated from the formula where d is
Options
A. the reduced diameter of the column
B. the dimension of the base
C. the diameter of the base
D. the diameter of the top.

6. Pick up the correct statement from the following:
Options
A. The cover of a longitudinal reinforcing bar in a column is kept not less than the diameter of the bar or 40 mm
B. The cover of a longitudinal reinforcing bar in beam is kept not less than the diameter of the bar or 25 mm
C. The end cover of a longitudinal reinforcing bar in a beam is kept not less than twice the diameter or 25 mm
D. The cover for tensile reinforcement in a slab is kept not less than diameter of the bar or 15 mm
E. All the above

7. Pick up the correct statement for the web stiffeners.
Options
A. vertical stiffeners are spaced at a distance not greater than 1.5 d and not less than 0.33 d
B. d is the distance between flange angles or the clear distance between flanges
C. for horizontal stiffeners, d is the clear distance between the horizontal stiffener and the tension flange
D. all the above.

8. Pick up the correct statement from the following :
Options
A. Water with hardness upto 75 ppm is considered soft
B. Water with hardness more than 200 ppm is considered hard
C. Water needed for laundaries should contain hardness less than 75 ppm
D. To provide taste during drinking, water should possess hardness between 75 to 120
E. All the above.

Comments