GATE Exam Questions problems
- 1. The minimum dissolved oxygen content (ppm) in a river necessary for the survival of aquatic life is
Options- A. 0
- B. 2
- C. 4
- D. 8 Discuss
Correct Answer: 4
- 2. A soil having particles of nearly the same size is known as
Options- A. well graded
- B. uniformly graded
- C. poorly graded
- D. gap graded Discuss
Correct Answer: uniformly graded
- 3. M - ? relationship for a simply supported beam shown below is given by :
Options- A. M l/EI = 2?
- B. M l/EI = 3?
- C. M l/EI = 4?
- D. M l/EI = 6? Discuss
Correct Answer: M l/EI = 4?
- 4. The maximum shear stress in a solid shaft of circular cross-section having diameter d subjected to a torque T is ?. If the torque is increased by four times and the diameter of the shaft is increased by two times, the maximum shear stress in the shaft will be
Options- A. 2?
- B. ?
- C. ?/2
- D. ?/4 Discuss
Correct Answer: ?/2
- 5. The values of liquid limit and plasticity index for soils having common geological origin in a rectricted locality usually define
Options- A. A zone above A-line
- B. A straight line parallel to A-line
- C. A straight line perpendicular to A-line
- D. Points may be anywhere in the plasticity chart Discuss
Correct Answer: A straight line parallel to A-line
- 6. A trickling filter is primarily a :
Options- A. straining process to remove suspended solids from sewage
- B. biological oxidation process to remove BOD from sewage
- C. straining process to remove turbidity from water
- D. straining process to remove bacteria from water Discuss
Correct Answer: biological oxidation process to remove BOD from sewage
- 7. Critical factors for the activated sludge treatment process are
Options- A. maximum hourly flow rate.
- B. maximum and minimum flow rate.
- C. maximum hourly flow rate and maximum daily organic load.
- D. minimum hourly flow rate and minimum daily organic load. Discuss
Correct Answer: maximum hourly flow rate and maximum daily organic load.
- 8. Maximum strain at the level of compression steel for a rectangular section having effective cover to compression steel as d' and neutral axis depth from compression face as xu is
Options- A. 0.0035 (1 - d'/xu)
- B. 0.002 (1 - d'/xu)
- C. 0.0035 (1 - xu/d')
- D. 0.002 (1 - xu/d') Discuss
Correct Answer: 0.0035 (1 - d'/xu)
- 9. MPN index is a measure of one of the following :
Options- A. Coliform bacteria
- B. BOD5
- C. Dissolved Oxygen Content
- D. Hardness Discuss
Correct Answer: Coliform bacteria
- 10. Presence of ifluoride in water greater than permissible level of 1.5 mg/l causes
Options- A. cardiovascular disease
- B. methemoglobinemia
- C. hepatitis
- D. dental fluorosis Discuss
Correct Answer: dental fluorosis
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