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In a differential band brake as shown in the below figure, if the length OB is greater than OA, then the force P at C should act in the downward direction.<br> <img src="/images/question-image/mechanical-engineering/theory-of-machine/1528355691-42.JPG" title="Theory of Machine mcq question image" alt="Theory of Machine mcq question image">
A
Yes
B
No
C
Unpredictable
D
None of these
Correct Answer:
No
In a differential band brake as shown in the below figure, the drum rotates anticlockwise and the greater tension T
1
acts at A and smaller tension T
2
at B. Length OA is greater than length OB. In order to apply the brake, the force P at C should
A
Be zero
B
Act in upward direction
C
Act in downward direction
D
None of the above
The figure shows the plot of y as a function of x
The function shown is the solution of the differential equation (assuming all initial conditions to be zero) is
A
$$\frac{{{{\text{d}}^2}{\text{y}}}}{{{\text{d}}{{\text{x}}^2}}} = 1$$
B
$$\frac{{{\text{dy}}}}{{{\text{dx}}}} = {\text{x}}$$
C
$$\frac{{{\text{dy}}}}{{{\text{dx}}}} = - {\text{x}}$$
D
$$\frac{{{\text{dy}}}}{{{\text{dx}}}} = \left| {\text{x}} \right|$$
For the brake to be self locking, the force P at C shown in the below figure, should
A
Be zero
B
Act in upward direction
C
Act in downward direction
D
None of these
The pictorial view of the frustum of a square pyramid is shown in figure 'X'. Its top view, when viewed in the direction of the arrow, will look like which of the given alternatives 1, 2, 3 and 4?
A
1
B
2
C
3
D
4
ABCD is a four bar mechanism in which AB = 310 mm and CD = 450 mm. AB and CD are both perpendicular to the fixed link AD, as shown in the below figure. If the velocity of B at this condition is v. Then the velocity of C is
A
$$\frac{1}{3}$$ v
B
$$\frac{2}{3}$$ v
C
$$\frac{3}{2}$$ v
D
$$\frac{9}{4}$$ v
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, if N coincides with O, then
A
Acceleration and velocity of the piston P is zero
B
Acceleration and velocity of the piston P is maximum
C
Acceleration of the piston P is zero and its velocity is maximum
D
Acceleration of the piston P is maximum and its velocity is zero
Find out the alternative figure which contains figure (X) as its part.
A
1
B
2
C
3
D
4
Find out the alternative figure which contains figure (X) as its part.
A
1
B
2
C
3
D
4
Find out the alternative figure which contains figure (X) as its part.
A
1
B
2
C
3
D
4
Find out the alternative figure which contains figure (X) as its part.
A
1
B
2
C
3
D
4
