Theory Of Machine - Study Mode
[#421] The power of a Porter governor is equal to
Correct Answer
(D) $$left( {frac{{{ ext{4}}{{ ext{c}}^{ ext{2}}}}}{{{ ext{1}} + { ext{2c}}}}}
ight)left( {{ ext{m}} + { ext{M}}}
ight){ ext{g}}{ ext{.h}}$$
[#422] According to Kennedy's theorem, if three bodies move relatively to each other, their instantaneous centers will lie on a
Correct Answer
(A) Straight line
[#423] Which gear is used for connecting two coplanar and intersecting shafts?
Correct Answer
(C) Bevel gear
[#424] In the below figure, PC is the connecting rod and OC is the crank making an angle $$ heta $$ with the line of stroke PO and rotates with uniform angular velocity at $$omega $$ rad/s. The Klien's acceleration diagram for determining the acceleration of the piston P is shown by quadrilateral CQNO, the acceleration of the piston is _________ when the crank OC and connecting rod PC are at right angles to each other.
Correct Answer
(B) Zero
Explanation
Solution:
[#425] In a screw jack, the effort required to lower the load W is given by
Correct Answer
(C) $${ ext{P}} = { ext{W}} an left( {varphi - alpha }
ight)$$