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Applied Mechanics And Graphic Statics QUESTIONS AND ANSWERS

Civil Engineering : Applied Mechanics And Graphic Statics QUESTIONS AND ANSWERS :: part4 : 21 to 25

Following Civil Engineering Multiple choice objective type questions and answers will help you in BSNL JTO, GATE 2024 and IES 2024 examinations :

21.The condilion for a lifting machine to be reversible is that its efficiency should be

less than 50%

more than 50%

more than 66.67%

equal to 100%

22.A cable loaded with 10 kN/m of span is stretched between supports in the same horizontal line 100 m apart. If the central dip is 10 m, then the maximum and minimum pull in the cable respectively are

1346.3 kN and 1500 kN

1436.2 kN and 1250 kN

1346.3 kN and 1250 kN

1436.2 kN and 1500 kN

23.A shell of mass 100 kg travelling with a velocity of 10 m/sec breaks into two equal pieces during an explosion which provides an extra kinetic energy of 20000 Joules. If the pieces continue to move in the same direction as before, then the speed of the faster one must be

20 m/sec

30 m/sec

40 m/sec

50 m/sec

24.If a flywheel increases its speed from 10 rpm to 20 rpm in 10 seconds, then its angular acceleration is

3.14 rad/sec 10

3.14 rad/sec 20

3.14 rad/sec 30

none of the above

More Applied Mechanics And Graphic Statics QUESTIONS AND ANSWERS available in next pages