Questions and answers for exam Preparation

MCQs

Total Questions : 543 | Page 27 of 55 pages

Question 261. When the sleeve of a Porter governor moves downwards, the governor speed

Increases
Decreases
Remain unaffected
First increases and then decreases

Discuss Question

Answer: Option B. -> Decreases

Question 262. In a radial cam, the follower moves

In a direction perpendicular to the cam axis
In a direction parallel to the cam axis
In any direction irrespective of the cam axis
Along the cam axis

Discuss Question

Answer: Option A. -> In a direction perpendicular to the cam axis

Question 263. When the sleeve of a Porter governor moves upwards, the governor speed

Increases
Decreases
Remain unaffected
First increases and then decreases

Discuss Question

Answer: Option A. -> Increases

Question 264. In a simple train of wheels, the velocity ratio __________ the intermediate wheels.

Depends upon
Is independent of
Either A or B
None of these

Discuss Question

Answer: Option B. -> Is independent of

Question 265. In the below figure, PC is the connecting rod and OC is the crank making an angle $$\theta $$ 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.

Infinity
Zero
Any +ve value
Any -ve value

Discuss Question

Answer: Option B. -> Zero

Question 266. Which gear is used for connecting two coplanar and intersecting shafts?

Spur gear
Helical gear
Bevel gear
None of the above

Discuss Question

Answer: Option C. -> Bevel gear

Question 267. The power of a Porter governor is equal to

$$\left( {\frac{{{{\text{c}}^{\text{2}}}}}{{{\text{1}} + {\text{2c}}}}} \right)\left( {{\text{m}} + {\text{M}}} \right){\text{g}}{\text{.h}}$$
$$\left( {\frac{{{\text{2}}{{\text{c}}^{\text{2}}}}}{{{\text{1}} + {\text{2c}}}}} \right)\left( {{\text{m}} + {\text{M}}} \right){\text{g}}{\text{.h}}$$
$$\left( {\frac{{{\text{3}}{{\text{c}}^{\text{2}}}}}{{{\text{1}} + {\text{2c}}}}} \right)\left( {{\text{m}} + {\text{M}}} \right){\text{g}}{\text{.h}}$$
$$\left( {\frac{{{\text{4}}{{\text{c}}^{\text{2}}}}}{{{\text{1}} + {\text{2c}}}}} \right)\left( {{\text{m}} + {\text{M}}} \right){\text{g}}{\text{.h}}$$

Discuss Question

Answer: Option D. -> $$\left( {\frac{{{\text{4}}{{\text{c}}^{\text{2}}}}}{{{\text{1}} + {\text{2c}}}}} \right)\left( {{\text{m}} + {\text{M}}} \right){\text{g}}{\text{.h}}$$

Question 268. According to Kennedy's theorem, if three bodies move relatively to each other, their instantaneous centers will lie on a