ISRO Technical Assistant Mechanical Question Paper - 2019 with Answer Key

ISRO Technical Assistant Mechanical Question Paper - 2019 with Answer Key

26) The head of water over an orifice of area 0.1 square meter is 5 m. The actual discharge in cubic meter per second if Cd=0.4 (assume g = 10 m/square second) is

Answer is:

0.4

27) Two mating spur gears have 40 and 120 teeth respectively. The pinion transmits a torque of 20 Nm rotating at 1200 rpm. The Torque transmitted by the gear is

Answer is:

60 Nm

Two mating spur gears have 40 and 120 teeth respectively. The pinion transmits a torque of 20 Nm rotating at 1200 rpm. The Torque transmitted by the gear is

28) A metallic body floats at the interface of mercury (of specific gravity 13.6) and water such that 40% of its volume is in Mercury and 60% in water. Total buoyant force ( in kN) experienced by body is (V=Volume of the floating body, g=10 m/square second)

Answer is:

60.4 V

29) The magnitude of the resultant of two equal coplanar forces acting at a point is equal to either of the forces. What is the angle between the forces?

Answer is:

120 degree

30) A steel ball of mass 2.4 kg is tied to a string and whirled it in a horizontal plane in a circle of diameter 2 m at a constant speed of 20 rpm. The tension in the string is (ignore gravity)

Answer is:

10.5 N

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