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KPSC ITI JTO Workshop Calculation and Science 2018
80

KPSC ITI JTO Workshop Calculation and Science Question Papers - 2018 with Answer Key

80) Using a pulley block, a weight of 180 N is raised with a force 15 N. Then the mechanical advantage is

15 N

12 N

9 N

180 N

Answer is:

12 N

KPSC ITI JTO Workshop Calculation and Science Question Papers - 2018 with Answer Key

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Related KPSC ITI JTO Workshop Calculation and Science Question Papers - 2018 with Answer Key

81) A screw jack has pitch of the screw p, length of lever l, then velocity ratio is given by

(2xPiexl)/(p)

(Piexl)/(2xp)

(2xPiexp)/(l)

(Piexp)/(2xl)

Answer is:

(2xPiexl)/(p)

A screw jack has pitch of the screw p, length of lever l, then velocity ratio is given by

82) In which case the potential energy is decreases?

On compressing the spring

On stretching a spring

On moving a body against gravitational pull

On raising an air bubble in water

Answer is:

On raising an air bubble in water

83) A pulley is used to lift a mass with a force of 900 N to height of 10 meters in a 90 seconds. Then the power required is

100 watts

75 watts

60 watts

50 watts

Answer is:

100 watts

84) Which one of the following is useful friction?

Rings in cylinders

Crankshaft bearings

Brake shoe linings

Wheel hole bearings

Answer is:

Brake shoe linings

KPSC ITI JTO Workshop Calculation and Science Question Papers - 2018 with Answer Key

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