SOLVED QP-2023
Theory of
machine(tom)
5th
SEMESTER-20.2.23
HSBTE-181754
SECTION a
b) A line Contact
a)
Structure
b)
1/96 of the pulley width
b)
b)
Rolling Pair
Straight bevel gears
b) A line Contact
a)
Structure
b)
1/96 of the pulley width
b)
b)
Rolling Pair
Straight bevel gears
b)
d)
I=mk2
RADIUS OF ROTATION INCREASES BUT HEIGHT OF GOVERNER DECREASES
C)
FLAT FACED GOVERNER
D)
ALL OF THE ABOVE
A)
ISOCHRONOUS
b)
d)
I=mk2
RADIUS OF ROTATION INCREASES BUT HEIGHT OF GOVERNER DECREASES
C)
FLAT FACED GOVERNER
D)
ALL OF THE ABOVE
A)
ISOCHRONOUS
SECTION b
process of fixing the links of a kinematic chain in such
a way that one link is fixed at a time to get different
mechanisms
The distance between the pitch circle and its tooth tip circle
angle between the line of force and a line at right angles to the
center line of two gears at the pitch point; pressure from the
tooth of one gear is passed on to the tooth of another gear
WATT, HARTNELL
WHEN GOVERNER HAS SAME
SPEED FOR ALL RAIUS OF
ROTATION
process of fixing the links of a kinematic chain in such
a way that one link is fixed at a time to get different
mechanisms
The distance between the pitch circle and its tooth tip circle
angle between the line of force and a line at right angles to the
center line of two gears at the pitch point; pressure from the
tooth of one gear is passed on to the tooth of another gear
WATT, HARTNELL
WHEN GOVERNER HAS SAME
SPEED FOR ALL RAIUS OF
ROTATION
angle through which the cam turns while the follower
remains stationary
FLAT CAM, RADIAL CAM
Uneven extensions and contractions of the belt when it passes
from tight side to slack side. There is relative motion between
belt and pulley surface, this phenomenon is called creep of
belt
ratio of the maximum fluctuations of energy to the
work done per cycle;;;;
vibrations with a continuously diminishing amplitude
angle through which the cam turns while the follower
remains stationary
FLAT CAM, RADIAL CAM
Uneven extensions and contractions of the belt when it passes
from tight side to slack side. There is relative motion between
belt and pulley surface, this phenomenon is called creep of
belt
ratio of the maximum fluctuations of energy to the
work done per cycle;;;;
vibrations with a continuously diminishing amplitude
SECTION C
branch of engineering science which deals with study of
relative motion between elements of a machine & the forces
which act on them;; Kinematics, Dynamics, Kinetics, Statics
energy storage capability of rim type flywheel is more.
Flywheel stores energy in the form of inertia and inertia will
be more for heavy mass at its periphery
sleeve gets lifted when the two balls attached to the arms rotate and the momentum of sleeve depends on what speed
the balls rotate. according to the sleeve lifted the supply of fuel to engine REDUCES AND DECREASE THE SPEED
Engines control valves , sewing machines, children's toys
1. Longitudinal Vibrations: · 2. Transverse vibrations:
3. Torsional Vibrations
branch of engineering science which deals with study of
relative motion between elements of a machine & the forces
which act on them;; Kinematics, Dynamics, Kinetics, Statics
energy storage capability of rim type flywheel is more.
Flywheel stores energy in the form of inertia and inertia will
be more for heavy mass at its periphery
sleeve gets lifted when the two balls attached to the arms rotate and the momentum of sleeve depends on what speed
the balls rotate. according to the sleeve lifted the supply of fuel to engine REDUCES AND DECREASE THE SPEED
Engines control valves , sewing machines, children's toys
1. Longitudinal Vibrations: · 2. Transverse vibrations:
3. Torsional Vibrations
reducing slip and power loss
A governor is said to be sensitive when it readily responds to a small
change of speed
governor maintains the mean engine speed over a large interval
of time, while the flywheel controls the speed fluctuations ONLY
DURING EACH thermodynamic cycle of the engine
(a)Knife edge follower. (b) Roller follower (C ) Flat faced (D) mushroom faced
Static balance is the ability of a stationary object to its
balance. when the objects centre of gravity is on the axis of
rotation. Whereas dynamic balance is the ability of an object
to balance whilst in motion
imbalance, misalignment, wear and looseness
H =895/N2
reducing slip and power loss
A governor is said to be sensitive when it readily responds to a small
change of speed
governor maintains the mean engine speed over a large interval
of time, while the flywheel controls the speed fluctuations ONLY
DURING EACH thermodynamic cycle of the engine
(a)Knife edge follower. (b) Roller follower (C ) Flat faced (D) mushroom faced
Static balance is the ability of a stationary object to its
balance. when the objects centre of gravity is on the axis of
rotation. Whereas dynamic balance is the ability of an object
to balance whilst in motion
imbalance, misalignment, wear and looseness
H =895/N2
SECTION D
T 1 / T 2 = e μθ
T 1 / T 2 = e μθ