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Q1— Section header —
1.1A system is a combination of components that act together to perform function not possible with any of the individual parts. 1. A system may become unstable if the output grows although no signal is applied to the system.
Q2— Section header —
2.1Determine with the aid of an algebra reduction block diagram the control ratio
2.2What do the symbols G and H n FIGURE 1 represent? (2\
2.3State TWO uses of block diagrams in control systems. (2\
2.4State the function of a summing network or summing junction. (1\ [10]10
Q3— Section header —
3.1The slope of the gain versus frequency response between 1 rad/s and 10 rad/s (1\
3.2The slope of the phase versus frequency response between 5 rad/s and 15 rad/s (1\
3.3The gain crossover frequency (1\
3.4The phase crossover frequency (1\
3.5The phase value at the gain crossover frequency (1\
3.6
3.7The gain margin (1\ 8080016 Copyright reserved
3.8The phase margin (1\
3.9The stability of the system (2\ [10]10
Q4— Section header —
4.1The derived closed loop response values of a certain control system test are shown in the table below. Plot the log magnitude versus phase plot on the Nichols c hart (attached\
4.2Use the plot in
Q4— Section header —
Q5— Section header —
5.1etermine he open loop poles and the zeros (2\
5.2Calculate the centre of asymptotes on the real axis (2\
5.3Calculate the asymptotic angles (2\
5.4Construct the root locus for the given system. (4\ [10] 808001610
Q6— Section header —
6.1Convert the given Laplace transform functions to a function of time:
6.1.2
6.2Convert the given Laplace transf orm functions to a function of '
6.2.2
Q7— Section header —
7.1Draw a neat , labelled diagram of the circuit (3\
7.2Calculate the following:
7.2.1The time period in seconds (2\
7.2.2The time constant (2\
7.2.3The output voltage of the positive and negative phase period of the input (3\ [10] 808001610
Q8— Section header —
8.1The capacitance of a capacito r is proportional to TWO items. Name these TWO items. (2\
8.2FIGURE 2 shows a diagram of a capacitive transducer using the dielectric method of liquid level monitoring. FIGURE 2
8.2.1Name the parts indicated on the sketch in FIGURE 2 by writing only the answer next to the letter ( \ the ANSWER BOOK
8.2.2Explain the operating principle of the capacitive transducer using the dielectric method of liquid level monitoring. (3\ [10]10
Q9— Section header —
9.1Define the term hydraulics. (2\
9.2State THREE disadvantages of using fluid power. (3\
9.3Explain what a hydraulic motor is. (2\
9.4Name THREE components of a basic hydraulic system. (3\ [10]10
Q10— Section header —
10.1Define the term ramp function applicable to DC waveform functions that are supplied by signal generators. (2\
10.2Draw a neat label ed block diagram of the cathode ray oscilloscope
4.1