Which of the following formulae is unjustified in rock excavations?

A.In the volume computations by trapezoidal formula, the prismoidal correction is

 

(a) subtractive (b) additive

(c) may be subtractive or additive (d) not applicable

B. Volume of earthwork can be calculated by

(a) mid-ordinates (b) average ordinates

(c) prismoidal rule (d) Hund’s rule

C. Because of irregular boundaries, if the computed area of a cross section works out

to be less than the actual one, it is known as

(a) under break (b) over break (c) free haul (d) overhaul

D. Which of the following formulae is unjustified in rock excavations?

(a) Trapezoidal (b) Prismoidal (c) Simpson’s (d) Hund’s

E. The curvature correction in the earthwork computation is

(a) always positive

(b) always negative

(c) positive if the centroid and centre of curvature are to the opposite side of the centre line

(d) positive if the centroid and centre of curvature are to the same side of the centre line.

F. The earthwork problems are best dealt with by

(a) moller diagram

(b) mass diagram

(c) haulage diagram

(d) cross-sectional area versus time diagram

 

find the cost of your paper

  Discuss in detail how the mechanical and magnetic properties of nanomaterials vary with particle size.

1.       Explain with a suitable example, the synthesis of nanostructured materials employing self-assembly, self-organisation and template-based methods. 2.       Discuss in detail how the mechanical and magnetic properties of nanomaterials vary….

  Explain the main purpose of interpoles in DC machine.

1.       Explain the main purpose of interpoles in DC machine. 2.       Why tapering of interpoles is carried out in a DC machine? 3.       Provide the specifications of DC machine. 4.      ….

Discuss about “active copper” and “inactive copper” in the design of DC machine.

1.       Mention the location and use of compensating winding in DC machine. Compensating winding is placed under the pole shoe of DC machine that is used to prevent the distortion….