Theory Of Machine - Practice Test

[#396] Hart mechanism has

(A) Eight links

(B) Six links

(C) Four links

(D) Twelve links

Correct Answer

(B) Six links

[#397] The periodic time is given by (where $$omega $$ = Angular velocity of the particle in rad/s)

(A) $$frac{omega }{{2pi }}$$

(B) $$frac{{2pi }}{omega }$$

(C) $$omega imes 2pi $$

(D) $$frac{pi }{omega }$$

Correct Answer

(B) $$frac{{2pi }}{omega }$$

[#398] Which of the following statement is wrong?

(A) The difference between the maximum and minimum energies is called maximum fluctuation of energy

(B) The coefficient of fluctuation of speed is the ratio of maximum fluctuation of speed to the mean speed

(C) The variations of energy above and below the mean resisting torque line is known as fluctuation of energy

(D) None of the above

(E) A round bar in a round hole form a turning pair

(F) A square bar in a square hole form a sliding pair

(G) A vertical shaft in a foot step bearing forms a successful constraint

(H) All of the above

Correct Answer

(D) None of the above
(G) A vertical shaft in a foot step bearing forms a successful constraint

[#399] In the two rotor system as shown in the below figure $$left( {{l_1} < {l_2}}
ight),$$ xa0 a node of vibration is situated

(A) Between $${l_1}$$ and $${l_2}$$ but nearer $${l_1}$$

(B) Between $${l_1}$$ and $${l_2}$$ but nearer to $${l_2}$$

(C) Exactly in the middle of the shaft

(D) Nearer to $${l_1}$$ but outside

Correct Answer

(B) Between $${l_1}$$ and $${l_2}$$ but nearer to $${l_2}$$

Explanation

Solution:

[#400] The height of a Watt's governor is

(A) Directly proportional to speed

(B) Directly proportional to (speed) 2

(C) Inversely proportional to speed

(D) Inversely proportional to (speed) 2

Correct Answer

(D) Inversely proportional to (speed) 2

Theory Of Machine - Study Mode

[#396] Hart mechanism has

Correct Answer

[#397] The periodic time is given by (where $$omega $$ = Angular velocity of the particle in rad/s)

Correct Answer

[#398] Which of the following statement is wrong?

Correct Answer

[#399] In the two rotor system as shown in the below figure $$left( {{l_1} < {l_2}} ight),$$ xa0 a node of vibration is situated

Correct Answer

Explanation

[#400] The height of a Watt's governor is

Correct Answer

[#399] In the two rotor system as shown in the below figure $$left( {{l_1} < {l_2}}
ight),$$ xa0 a node of vibration is situated