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Higher Study | Theory of Machines | Gear Trains

When the axes of first and last gear are co-axial, then gear train is known as
The gear train usually employed in clocks is
The number of degrees of freedom of an epicyclic gear train is
An involute profile is used in
To transmit power from one rotating shaft to another whose axes are neither parallel nor intersecting, use 
Consider the following statements: 1. In spur gears, the contact occurs abruptly on a line parallel to the axis, and the disengagement too is abrupt. 2. In helical gears, both loading and unloading are gradual, and therefore, these happen more smoothly and less noisily 3. When two gears mesh, any arbitrary shape of the tooth can be chosen for the profile of the teeth of any one of the two gears, and the profile for the other shall be obtained by applying the law of gearing. Which of the above statements are correct?
When the axes of the first and last wheels of compound gear coincide, then the train is known as
In a gear train where the axes of gears have motion are called:
Statement (I): In an epicyclic gear train, the size of the gearbox is smaller than that of the spur gearbox for the same horsepower and the same velocity ratio. Statement (II): In an epicyclic gearbox, more than one pair of gear pinion contacts always exist, whereas it is not so in spur gearbox.
The instantaneous centre between pinion and gear wheel in a gear set mechanism shown below is located at
What is the addendum of a cycloidal gear tooth?
What is the radial distance of a tooth from the pitch circle to the top of the tooth known as?
Which of the following is NOT true about Planetary gear trains?
In case of Co-axial shifting, which of the following gear train is used?
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. 
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