Related Questions

If the 'Mercury planet' is called 'Uranus planet', 'Uranus planet' is called 'Jupiter planet', 'Jupiter planet' is called 'Mars planet', 'Mars planet' is called 'Earth planet', 'Earth planet' is called 'Saturn planet', 'Saturn planet' is called 'Venus planet', and 'Venus planet' is called 'Pluto planet', then on which planet do we live?
Statement (I): The epicyclic gear train has a central gear and an epicyclic gear which produces epicyclic motion being moved by a crank arm. Statement (II): The arm contains the bearings for the epicyclic gear to maintain two gears in mesh. 
A planetary gear train is shown in the figure. Number of teeth on the sun gear A, planet gear B and fixed ring gear D are given by 30, 70 and 140 respectively. Module is taken as 5mm. A pair of spur gears consist of 25 teeth pinion meshing with a 115 teeth gear. The module is 5mm. Calculate the gear ratio.
A gear train consist of spur gear as shown. Gear A receives 4kW of power at 750rpm through its shaft and rotates in CW direction. A gear train consist of spur gear as shown. Gear A receives 4kW of power at 750rpm through its shaft and rotates in CW direction. Calculate the torque on the gear C if number of teeth on gear A, B and C are 40, 70 and 30.
In an epicyclic gear speed reduction unit, the ratio of the number of teeth of the annular gear to the sun gear is
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
There is only one rail track between stations A and B on a railway line. One hour after the northbound superfast train N leaves station A for station B, the southbound passenger train S reaches station A from station B. The speed of superfast train is twice that of express train E, while the speed of passenger train S is half of that of train E. On some one day train N leaves from station A to station B 20 minutes late than its usual schedule. Both Train N and Train S have increased their speed to maintain the schedule as per the table. If the superfast train doubles its speed, then what should be the ratio (approximately) of the speed of the passenger train to the speed of the superfast train so that the passenger train reaches the station on that day at the exact scheduled time.
A planetary gear train is shown in the figure. Number of teeth on the sun gear A, planet gear B and fixed ring gear D are given by 30, 70 and 140 respectively. Module is taken as 5mm. Calculate the tangential component of gear tooth force.
Which of the following statements about the movement of planets is true? A. A planet's orbit is elliptical with the Sun at one of two focal points. B. The orbit of a planet is circular with the sun in the center. C. The orbit of a planet is elliptical with another planet in one of the two center-points. D. The orbit of a planet is circular with another planet in the center. 
A planetary gear train is shown in the figure. Number of teeth on the sun gear A, planet gear B and fixed ring gear D are given by 30, 70 and 140 respectively. Module is taken as 5mm. Calculate the shaft angle for opposite hand of helix if helix angle of two gears are 20⁰ and 17⁰.