Related Questions

The difference between CAD and CAM is that CAD software is directed at product design while CAM software is:
A concerned with production and control of tool design
B concerned with management programs
C designed for communications
D specifically for PC-board design
E None of the above
The velocity of the reciprocating roller follower when it has contact with the straight flanks of the tangent cam, is given by (where $$\omega $$ = Angular velocity of the cam shaft)
A $$\omega \left( {{{\text{r}}_1}{{\text{r}}_2}} \right)\sin \theta $$
B $$\omega \left( {{{\text{r}}_1} + {{\text{r}}_2}} \right)\sin \theta \sec 2\theta $$
C $$\omega \left( {{{\text{r}}_1}{{\text{r}}_2}} \right)\cos \theta $$
D $$\omega \left( {{{\text{r}}_1} + {{\text{r}}_2}} \right)\cos \theta \,{\text{cosec2}}\theta $$
The period during which the cam follower remains at rest, when cam moves, is known as
A Constant period
B Fixed period
C Dwell period
D Idle period
Which of the following mechanism is an approximate straight line motion mechanism?
A Watt’s mechanism
B Grasshopper mechanism
C Robert’s mechanism
D All of the mentioned
In its simplest form, a cam mechanism consists of following number of links
A 1
B 2
C 3
D 4
The pressure angle of a cam is the angle between the direction of the follower motion and a normal to the
A Pitch circle
B Base circle
C Pitch curve
D Prime circle
The motion of the cam is transferred to the valves through
A Pistons
B Rocker arms
C Camshaft pulley
D Valve stems
The main constituent which imparts hydraulicity to hydraulic lime is
A Calcium oxide
B Silica
C Clay
D Water
Addition of tungsten to steel imparts
A Magnetic properties
B Cutting hardness
C Corrosion resistance
D Ductility
Cross linked polymers formed from bi-and trifuctional groups in which cross-linkage in three dimensions via few chemical bonding across linear chains occur imparts to the polymer __________ properties.
A Thermoplastic
B Thermosetting
C Elastometric
D Brittleness

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