The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the

Theory of Machine
The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the

Effects of unbalances are directly proportional to the speed

Effects of unbalances are proportional to the square of the speed

Unbalanced couples are caused only at higher speeds

Unbalanced forces are not dangerous at higher speeds

Effects of unbalances are directly proportional to the speed

Effects of unbalances are proportional to the square of the speed

Unbalanced couples are caused only at higher speeds

Unbalanced forces are not dangerous at higher speeds

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
In a four-bar chain it is required to give an oscillatory motion to the follower for a continuous rotation of the crank. For the lengths of 50 mm of crank and 70 mm of the follower, determine theoretical maximum length of coupler. The distance between fixed pivots of crank and followers is

45 mm

Slightly more than 95 mm

95 mm

Slightly less than 95 mm

45 mm

Slightly more than 95 mm

95 mm

Slightly less than 95 mm

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
A mechanism is an assemblage of

Three links

Four or more than four links

Two links

All of these

Three links

Four or more than four links

Two links

All of these

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
Which of the following statement is correct for involute gears?

The interference is inherently absent.

The variation in centre distance of shafts increases radial force.

The pressure angle is constant throughout the teeth engagement.

A convex flank is always in contact with concave flank.

The interference is inherently absent.

The variation in centre distance of shafts increases radial force.

The pressure angle is constant throughout the teeth engagement.

A convex flank is always in contact with concave flank.

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
The fundamental equation for correct steering is (where φ and α = Angle through which the axis of the outer wheel and inner wheel turns respectively, c = Distance between the pivots of the front axles, and d = Wheel base)

cosφ - sinα = c/b

sinφ + sinα = b/c

cotφ - cotα = c/b

tanφ + cotα = b/c

cosφ - sinα = c/b

sinφ + sinα = b/c

cotφ - cotα = c/b

tanφ + cotα = b/c

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine
A fixed gear having 200 teeth is in mesh with another gear having 50 teeth. The two gears are connected by an arm. The number of turns made by the smaller gear for one revolution of arm about the centre of bigger gear is

2

4

5

3

2

4

5

3

ANSWER DOWNLOAD EXAMIANS APP

Theory of Machine

Theory of Machine The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the

Theory of Machine A mechanism is an assemblage of

Theory of Machine Which of the following statement is correct for involute gears?

Theory of Machine The fundamental equation for correct steering is (where φ and α = Angle through which the axis of the outer wheel and inner wheel turns respectively, c = Distance between the pivots of the front axles, and d = Wheel base)

Theory of Machine A fixed gear having 200 teeth is in mesh with another gear having 50 teeth. The two gears are connected by an arm. The number of turns made by the smaller gear for one revolution of arm about the centre of bigger gear is

Theory of Machine
The static balancing is satisfactory for low speed rotors but with increasing speeds, dynamic balancing becomes necessary. This is because, the

Theory of Machine
A mechanism is an assemblage of

Theory of Machine
Which of the following statement is correct for involute gears?

Theory of Machine
The fundamental equation for correct steering is (where φ and α = Angle through which the axis of the outer wheel and inner wheel turns respectively, c = Distance between the pivots of the front axles, and d = Wheel base)

Theory of Machine
A fixed gear having 200 teeth is in mesh with another gear having 50 teeth. The two gears are connected by an arm. The number of turns made by the smaller gear for one revolution of arm about the centre of bigger gear is