23. In a lifting machine a weight of 5 kN is lifted through 200 mm by an effort of 0.1 kN moving through 15 m. The mechanical advantage and velocity ratio of the machine are respectively_____________________?

A. 50 and 75
B. 75 and 50
C. 75 and 75
D. 50 and 50
✅ The correct answer is option A.

24. The main disadvantage of angle nose out parking configuration of aircraft is that the_______________?

A. aircraft rear loading door is far away from terminal building.
B. hot blast is directed towards the terminal building
C. overall apron area required is more
D. all the above
✅ The correct answer is option B.

26. A rod AB carries three loads of 30 N, 70 N and 100 N at distances of 20 mm, 90 mm and 150 mm respectively from A. Neglecting the weight of the rod, the point at which the rod will balance is_______________?

A. 109.5 mm from A
B. 119.5 mm from A
C. 125.5 mm from A
D. 132.5 mm from A
✅ The correct answer is option A.

30. The length of runway under standard conditions is 2000 m. The elevation of airport site is 300 m. Its reference temperature is 33.05°C. If the runway is to be constructed with an effective gradient of 0.25 percent, the corrected runway length will be________________?

A. 2500 m
B. 2600 m
C. 2700 m
D. 2800 m
✅ The correct answer is option C.