There are six gears A, B, C, D, E, F in a compound train. The numbers of teeth 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

Question

There are six gears A, B, C, D, E, F in a compound train. The numbers of teeth 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 Answer

Related questions

+1 vote

1 answer

In a reverted gear train, two gears P and Q are meshing, Q-R is a compound gear, and R and S are meshing. The modules of P and R are 4 mm and 5 mm respectively. The numbers of teeth in P, Q and r are 20, 40 and 25 respectively. The number of teeth in S is

asked Sep 25, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

A fixed gear having 100 teeth meshes with another gear having 25 teeth, the centre lines of both the gears being joined by an arm so as to form an epicyclic gear train. The number of rotations made by the smaller gear for one rotation of the arm is

asked Sep 26, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

Speed reduction in a gear box is achieved using a worm and worm wheel. The worm wheel has 30 teeth and a pitch diameter of 210 mm. If the pressure angle of the worm is 20^o, what is the axial pitch of the worm?

asked Sep 26, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

Match list I with list II List I List II A. Compound train 1. Hart mechanism B. Quick return mechanism 2. Coriolis force C. Exact straight line motion 3. Transmission of motion around bends and corners D. Approximate straight line motion 4. Watt mechanism

asked Sep 26, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

In case the number of teeth on two bevel gears in mesh is 30 and 60 respectively, then the pitch cone angle of the gear will be

asked Sep 26, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

A pair of helical gears has fewer teeth in contact as compared to an equivalent pair of spur gears.

asked Sep 26, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

In the case of spur gears, the mating teeth execute pure rolling motion with respect to each other from the commencement of engagement to its termination.

asked Sep 25, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

Spiral bevel gears designed to be used with an offset in their shafts are called ‘hypoid gears’

asked Sep 25, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

Two mating spur gears have 40 and 120 teeth respectively. The pinion rotates at 1200 rpm and transmits a torque of 20 Nm. The torque transmitted by the gear is

asked Sep 26, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

A speed reducer unit consists of a double-threaded worm of pitch = 11 mm and a worm wheel of pitch diameter = 84 mm. The ratio of the output torque to the input to rque is

asked Sep 26, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

A pair of gears forms a rolling pair.

asked Sep 26, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

Gears with involute tooth profile transmit constant velocity ratios between shafts connected by them.

asked Sep 26, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

In a simple gear train, if the number of idler gears is odd, then the direction of motion of driven gear will

asked Sep 26, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

In a simple gear train, if the number of idle gears is odd, then the motion of driven gear will

asked Sep 25, 2022 in Machine Kinematics by Leo (38.0k points)

+2 votes

1 answer

In a simple planetary gear drive, the sun gear is used to give drive a plant carrier mounted with 3 planetary gears, while ring gear is held stationary. If sun gear and all other planetary gears have 20 teeth each and ring gear has 60 teeth, the gear ratio will be __________

asked Jan 29, 2022 in Farm Machinery by Olivia (38.9k points)

+1 vote

1 answer

The velocity ratio in the case of the compound train of wheels is equal to

asked Sep 26, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

An external gear with 60 teeth meshes with a pinion of 20 teeth, module being 6 mm. What is the centre distance in mm?

asked Sep 26, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

Determine the length of the chain having 200 mm pitch and is used for speed reduction from 340 rpm to 120 rpm. The numbers of teeth on driving and driven sprockets are 20 and 40 respectively. The centre to centre distance between 2 sprockets is 540 mm and diameter of driven sprocket is 450 mm.

asked Jan 29, 2022 in Farm Machinery by Olivia (38.9k points)

+1 vote

1 answer

If the ratio of angular velocities of the driven and driving torque is one, find the Braking torque

asked Sep 25, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

The ratio of speeds between gears is dependent upon the _________

asked Sep 25, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

In a gear train, when the axes of the shafts, over which the gears are mounted, move relative to a fixed axis, is called

asked Sep 25, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

A connecting rod of mass 5.5 kg is placed on a horizontal platform whose mass is 1.5 kg. It is suspended by three equal wires, each 1.25 m long, from a rigid support. The wires are equally spaced round the circumference of a circle of 125 mm radius. When the c.g. of the connecting rod coincides with the axis of the circle, the platform makes 10 angular oscillations in 30 seconds. Determine the mass moment of inertia about an axis through its c.g.

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

In a simple train of wheels, if the number of intermediate wheels is odd, the motion of the follower will be same as that of the driver.

asked Sep 24, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

The tooth profile most commonly used in gear drives for power transmission is

asked Sep 26, 2022 in Machine Kinematics by Leo (38.0k points)

+1 vote

1 answer

When the axes of the shafts, over which the gears are mounted, move relative to a fixed axis, then the train is known as reverted gear train.

asked Sep 25, 2022 in Machine Kinematics by Leo (38.0k points)

Greg · Answer 1 · 2022-10-21T14:07:58+0000

The correct choice is (a) 1/24

For explanation: The ratio of angular speeds of F to A = TA.TC.TE/TB.TD.TF

= 20 x 30 x 25/60 x 80 x 75

= 1/24.

There are six gears A, B, C, D, E, F in a compound train. The numbers of teeth 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

Please log in or register to answer this question.

1 Answer

Please log in or register to add a comment.

Related questions

Categories