1
GATE ME 2005
MCQ (Single Correct Answer)
+2
-0.6
An instantaneous configuration of a four-bar mechanism, whose plane is horizontal, is shown in the figure below. At this instant, the angular velocity and angular acceleration of link $${Q_2}\,\,A$$ are $$\omega = 8\,\,rad/s$$ and $$\alpha = 0$$, respectively, and the driving torque $$(T)$$ is zero. The link $${Q_2}\,\,A$$ is balanced so that its center of mass falls at $${Q_2}.$$ GATE ME 2005 Theory of Machines - Analysis of Plane Mechanisms Question 1 English

At the instant considered, what is the magnitude of the angular velocity of $${O_4}B?$$

A
$$1$$ rad/s
B
$$3$$ rad/s
C
$$8$$ rad/s
D
$$64/3$$ rad/s
2
GATE ME 2005
MCQ (Single Correct Answer)
+1
-0.3
There are four samples P, Q, R and S, with natural frequencies 64, 96, 128 and 256 Hz, respectively. There are mounted on test setups for conducting vibration experiments. If a loud pure not of frequency 144Hz is produced by some instrument, which of the samples will show the most perceptible induced vibration?
A
P
B
Q
C
R
D
S
3
GATE ME 2005
MCQ (Single Correct Answer)
+2
-0.6
In a spring-mass system, the mass is 0.1 kg and the stiffness of the spring is 1 kN/m. By introducing a damper, the frequency of oscillation is found to be 90% of the original value. What is the damping coefficient of the damper?
A
1.2 N.s/m
B
3.4 N.s/m
C
8.7 N.s/m
D
12.0 N.s/m
4
GATE ME 2005
MCQ (Single Correct Answer)
+2
-0.6
The following table of properties was printed out for saturated liquid and saturated vapour of ammonia. The titles for only the first two columns are available. All that we know is that the other columns (columns $$3$$ to $$8$$) contain data on specific properties, namely, internal energy $$(kJ/kg),$$ enthalpy $$(kJ/kg)$$ and entropy $$(kJ/kg.K).$$ GATE ME 2005 Thermodynamics - Properties of Pure Substances Question 7 English

The specific enthalpy data are in columns

A
$$3$$ and $$7$$
B
$$3$$ and $$8$$
C
$$5$$ and $$7$$
D
$$5$$ and $$8$$
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