A tensional system with discs of moment of inertia I1 and I2 shown in the given figure, is gear driven such that the ratio of the speed of shaft B to shaft A is ‘n’. Neglecting the inertia of disc on B at the speed of shaft A is equal to

1.  nI2

2.  n2 I2

3.  I2/ n2

4.  I2/ n

4

n2 I2

Explanation :
No Explanation available for this question

Which one of the following pairs is not correctly matched

1.  Positive drive...........Belt drive

2.  High velocity ratio..........Worm gearing and non-intersecting shafts

3.  To connect non-parallel.....Spiral gearing and non-intersecting shafts

4.  Diminished noise.................Helical gears smooth operation

4

To connect non-parallel.....Spiral gearing and non-intersecting shafts

Explanation :
No Explanation available for this question

There are six gears A, B, C, D, E and F in compound train. The number of teethes in the gears are 20, 60, 30, 80, 25 and 75 respectively. The ratio of the angular speeds of the driven (F) to the driver (A) of the drive is

1.  1/24

2.  1/8

3.  4/25

4.  12

4

1/24

Explanation :
No Explanation available for this question

A rotor supported at A and B, carries two masses as shown in the given figure. The rotor is

1.  Dynamically

2.  Statically balanced

3.  Statically and dynamically balanced

4.   Not balanced

4

Statically and dynamically balanced

Explanation :
No Explanation available for this question

The gear train usually employed in clocks is a

1.  Reverted gear train

2.  Simple gear train

3.  Sun and planet gear

4.   Differential gear

4

Reverted gear train

Explanation :
No Explanation available for this question

A compound train consisting of spur, bevel and spiral gears is shown in the figure along with the teeth numbers marked against the wheels. Overall speed ratio of the train is

1.  8

2.  2

3.  1/2

4.  1/8

4

1/8

Explanation :
No Explanation available for this question

A system of masses rotating in different parallel planes is in dynamic balance if the resultant

1.  Force is equal to zero

2.  Couple is equal to zero

3.  Force and the resultant couple are both equal to zero

4.  Forces is numerically equal to the resultant couple, but neither of them need necessarily be zero

4

Force and the resultant couple are both equal to zero

Explanation :
No Explanation available for this question

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 the bigger gear is

1.  2/4

2.  3

3.  4

4.  5

4

5

Explanation :
No Explanation available for this question

An involutes pinion and gear are in mesh. If both have the same size of addendum, then there will be an interference between the

1.  Tip of the gear tooth and flank of pinion

2.  Tip of the pinion and flank of gear

3.  Flanks of both gear and pinion

4.   Tip of the both gear and pinion

4

Tip of the gear tooth and flank of pinion

Explanation :
No Explanation available for this question

The equation d2x/dt2 + K.x/m = 0 represents

1.  Free vibrations

2.  Forced vibrations

3.  Periodically forced vibrations

4.  Free vibrations with viscous damping

4