Work, Energy and Power-Power (KVPY Stream-SA (Class 11) Physics): Questions 6 - 8 of 8

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Question number: 6

» Work, Energy and Power » Power

MCQ▾

Question

A horse pulse a wagon with a force of 550 N at an angle of 300 with the horizontal at a speed of 10 km h-1. The power of the horse is,

Choices

Choice (4) Response

a.

1323 W

b.

2313 W

c.

595 W

d.

1233 W

Question number: 7

» Work, Energy and Power » Power

MCQ▾

Question

A horse pulse a wagon with a force of 720 N at an angle of 600 with the horizontal at a speed of 15 km h-1. The power of the horse is,

Choices

Choice (4) Response

a.

1000 W

b.

2000 W

c.

500 W

d.

1500 W

Question number: 8

» Work, Energy and Power » Power

Appeared in Year: 2016

MCQ▾

Question

Water falls down a 500.0m shaft to reach a turbine which generates electricity. How much water must fall per second in order to generate 1.00×109watts of power? (Assume 50% efficiency of conversion and g=10ms2 )

Choices

Choice (4) Response

a.

200m3

b.

500m3

c.

250m3

d.

400m3

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