- A. 1 in 15
- B. 1 in 12.5
- C. 1 in 10
- D. equal to camber
Highway Engineering
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As per IRC recommendations, the maximum limit of super elevation for mixed traffic in plain terrain is_____.
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Los Angeles testing machine is used to conduct_____.
- A. Abrasion test
- B. Impact test
- C. Attrition test
- D. Crushing strength test
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If b is the wheel track of a vehicle and h is the height of centre of gravity above road surface, then to avoid overturning and lateral skidding on a horizontal curve, the centrifugal ratio should always be_____.
- A. less than b/2h and greater than co-efficient of lateral friction
- B. less than b/2h and also less than co-efficient of lateral friction
- C. greater than b/2h and less than co-efficient of lateral friction
- D. greater than b/2h and also greater than coefficient of lateral friction
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The group index for a soil, whose liquid limit is 40 percent, plasticity index is 10 percent and percentage passing 75 micron IS sieve is 35, is_____.
- A. 0
- B. 3
- C. 5
- D. 7
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The most efficient traffic signal system is_____.
- A. simultaneous system
- B. alternate system
- C. flexible progressive system
- D. simple progressive system
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Select the correct statement.
- A. Traffic volume should always be more than traffic capacity.
- B. Traffic capacity should always be more than traffic volume.
- C. Spot speed is the average speed of a vehicle at a specified section.
- D. 85th percentile speed is more than 98th percentile speed.
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The terrain may be classified as rolling terrain if the cross slope of land is_____.
- A. upto 10%
- B. between 10% and 25%
- C. between 25% and 60%
- D. more than 60%
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A traffic rotary is justified where_____.
- A. number of intersecting roads is between 4 and 7
- B. space is limited and costly
- C. when traffic volume is less than 500 vehicles per hour
- D. when traffic volume is more than 5000 vehicles per hour
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Rigidity factor for a tyre pressure greater than 7 kg/cm² is_____.
- A. equal to 1
- B. less than 1
- C. greater than 1
- D. zero
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In soils having same values of plasticity index, if liquid limit is increased, then_____.
- A. Compressibility and permeability decrease and dry strength increases
- B. Compressibility, permeability and dry strength decrease
- C. Compressibility, permeability and dry strength increase
- D. Compressibility and permeability increase and dry strength decreases