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131.

In case of gears the tooth fillet is

A.	Width of the gear tooth	B.	Curve forming face and flank
C.	Surface of the top of the tooth	D.	Radius that connects the root circle to the profile of the tooth
E.	Part of the tooth surface lying below the pitch surface

132.

In case of gears the addendum is given by

A.	One module	B.	1.57 x module
C.	1.25 x module	D.	2.157/module
E.	?/circular pitch

133.

Gears of watches are generally manufactured by

A.	Die casting	B.	Machining on a gear shaper
C.	Machining on a hobber	D.	Power metallurgy process
E.	Stamping

134.

In case of helical gears the angle between the plane containing the axes of the gear and plane passing through the pitch point is known as

A.	Pitch angle	B.	Lead angle
C.	Helix angle	D.	Axial pitch angle
E.	Pressure angle

135.

In case of worm and worm wheel, the maximum efficiency is obtained when

A.	Worm is driver	B.	Worm wheel is driver
C.	Either of the worm or worm wheel is a driver	D.	Depends on other factors
E.	None of the above

136.

A shaft having one end fixed has a disc oscillating freely at the other end. If the shaft stiffness, increases the natural frequency of vibrations will

A.	Increase	B.	Decrease
C.	There will be no effect	D.	Will depend on the stiffness of the disc
E.	None of the above

137.

Frequency of oscillation of a compound pendulum having the same distance between point of suspension and the centre of gravity of mass as a simple pendulum will be

A.	Less	B.	Same
C.	More	D.	Depends on other parameters
E.	None of the above

138.

For a vibrating body, if ratio ?/?n is very high, then phase angle would tend to approach

A.	0?	B.	90?
C.	180?	D.	270?
E.	None of the above

139.

The speed of gas turbine is usually

A.	Same as natural frequency of vibrations	B.	Below the natural frequency of vibrations
C.	Well above the natural frequency of vibrations	D.	Not connected with natural frequency of vibrations
E.	None of the above

140.

At critical speed

A.	The shaforuns smoothly	B.	The shaft runs with noise due to vibrations
C.	The shaft becomes dynamically unstable with negligible lateral amplitudes	D.	The shaft becomes dynamically unstable with large lateral amplitudes
E.	None of the above