CIVIL ENGINEERING PRACTICE QUESTIONS

1. Consider the following statements:
1. Bricks lose their strength by 25% when soaked in water.
2. Minimum crushing strength of brick in buildings should be 35 kg/cm
3. The size of modular type bricks is 20 cm x 10 cm x 10 cm including mortar thickness.
Which of the above statements are correct?

A 1, 2 and 3
B. 1 and 2 only
C. 1 and 3 only
D. 2 and 3 only

Ans: D

2. The correct statement in respect of a centrifugal pump is
A The discharge varies in direct proportion to speed as also square of the diameter
B. The head varies as the square of the speed as also of the square of the diameter
C. The discharge varies in inverse proportion to speed as also the cube of the diameter
D. The power varies as the head and square of the diameter.

Ans: B

3. Consider the following statements about theodolites:
1. Transit theodolite is atheodolite in which the telescope can be transited.
2. EDMI is a theodolite fitted with a micrometer for measurements.
3. A double reading theodolite is one in which diametrically opposite segments of the graduated circle are brought into view and the readings are averaged.
Which of the above statements are correct?
A. 1, 2 and 3
B. 1 and 2 only
C. 1 and 3 only
D. 2 and 3 only

Ans: A
4. Consider the following statements:
1. Sensitivity of a natural soil deposit cannot be less than 1.0.
2. A saturated loose sand deposit liquefies when water flows through it in upward direction under critical hydraulic gradient.
3. A quick clay has a very high sensitivity.
Which of the above statements are correct?
A. 1, 2 and
B. 1 and 2 only
C. 1 and 3 only
D 2 and 3 only

Ans: A

5. The terminal velocity of a small sphere settling in a viscous fluid varies as the
A. inverse square of the diameter
B. inverse of the diameter
C. first power of its diameter
D. inverse of the fluid viscosity

Ans: D