1. maximum and zero
2. zero and maximum
3. minimum and maximum
4. zero and minimum
maximum and zero
1. base circle
2. pitch circle
3. root circle
4. prime circle
base circle
1. double helical gears having opposite teeth
2. double helical gears having identical teeth
3. single helical gear in which one of the teeth of helix angle a is more
4. mutter gears
double helical gears having opposite teeth
1. Machines transmit mechanical work, whereas structures transmit forces
2. In machines, relative motion exists be-tween its members, whereas same does not exist in case of structures
3. Machines modify movement and work, whereas structures modify forces
4. Efficiency of machines as well as structures is below 100%
Efficiency of machines as well as structures is below 100\%
1. D1/D2
2. D2/D1
3. D1-D2
4. D1
D1
1. machine
2. structure
3. mechanism
4. inversion
mechanism
1. point or line contact between the two elements when in motion
2. surface contact between the two elements when in motion
3. elements of pairs not -held together mechanically
4. two elements that permit relative motion
surface contact between the two elements when in motion
1. straight line
2. circle
3. parabola
4. ellipse
ellipse
1. lower pairs
2. higher pairs
3. rolling pairs
4. turning pairs
lower pairs
1. point or line contact between the two elements when in motion
2. surface contact between the two elements when in motion
3. elements of pairs not held together mechanically
4. two elements that permit relative motion
two elements that permit relative motion