59) Half-wave Rectifier has theoretical maximum efficiency of

40.60%

81.20%

78.50%

50%

Answer is:

40.60%

RRB JE Mechanical Question Paper 2014 (Set-3) with Answer Key

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60) The base of a rectangular solid is a square, and its height is twice its length. If its volume is 1024 cubic centimeter, then surface area of its surface is

560 square centimeter

640 square centimeter

680 square centimeter

720 square centimeter

Answer is:

61) The term biodiversity refers to

totality of species of a region

totality of ecosystem of a region

totality of genes of a region

All of the above

Answer is:

All of the above

Explanation:

The term biodiversity (from “biological diversity”) refers to the variety of life on Earth at all its levels, from genes to ecosystems, and can encompass the evolutionary, ecological, and cultural processes that sustain life.

62) Effect of a force on a body depends upon its

direction

magnitude

position

all of the above

Answer is:

all of the above

63) The weight of the body at the center of the earth is

Zero

Infinite

Same as that on the surface of the earth

None of the above

Answer is:

Zero

RRB JE Mechanical Question Paper 2014 (Set-3) with Answer Key

For more MCQ's Click Here

59) Half-wave Rectifier has theoretical maximum efficiency of

40.60%

RRB JE Mechanical Question Paper 2014 (Set-3) with Answer Key

Related RRB JE Mechanical Question Paper 2014 (Set-3) with Answer Key

60) The base of a rectangular solid is a square, and its height is twice its length. If its volume is 1024 cubic centimeter, then surface area of its surface is

61) The term biodiversity refers to

All of the above

62) Effect of a force on a body depends upon its

all of the above

63) The weight of the body at the center of the earth is

Zero

RRB JE Mechanical Question Paper 2014 (Set-3) with Answer Key