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Q2— Section header —
2.1FIGURE 1(a\ows a first order RC integrator circuit diagram. FIGURE 1(b\ows the resulting block diagram for this system. Find the transfer function for this system by using block diagram algebra reduction.
2.2Express the given Laplace function in terms of the equivalent time function. (2\
2.3Express the given Laplace funct ion in terms of the equivalent s domain. (2\ [10]10
Q3— Section header —
3.1The gain peak value (Mp\ (1\
3.2The TWO corner frequencies (2\
3.3The gain crossover frequency ( (1\
3.4The phase crossover frequency ( (1\
3.5The resonant frequency ( (1\
3.6The gain margin (1\
3.7The phase margin (1\
3.8The stability of the system (2\ [10]10
Q4— Section header —
4.1Use the plot to tabulate the closed loop gain and phase values when: rad/s and 150 rad/s (4\
4.2Use the Nichols chart to determine the following:
4.2.1The gain margin
4.2.2The phase crossover frequency
4.2.3The un damped resonant frequency
4.2.4The bandwidth
4.2.5The peak magnitude gain value
4.2.610
Q5— Section header —
5.1Calculate the closed loop roots if A = 0; 4; 16 and (Tabulate your answers\ (5\
5.2Plo t the closed loop roots on the domain graph as A varies from 0 to infinity. (5\ [10]10
Q6— Section header —
6.1List the FOUR main groups of transducers. (4\
6.2Draw a neat labelled diagram of an AC acho generator
6.3Explain the term resolution with regard to potentiometers. (2\
6.4Name the transducer responsible for converting information bearing light rays into electrical signals. (1\ [10]10
Q7— Section header —
7.1State the main function of a transducer. (2\
7.2State the TWO conditions a rectifier has to satisfy in order to convert the AC signal into a DC signal. (2\
7.3Control systems can be used to cont rol electrical concept systems. Name TWO other concept control systems that can be controlled. (2\
7.4Name TWO disadvantages of potentiometers. (2\
7.5List TWO practical applications of an electronic self balancing potentiometer. (2\ [10] 808001610
Q8— Section header —
8.1Name TWO classes of gear type pumps. (2\
8.2FIGURE 2 below shows a certain type of hydraulic pump. Study the diagram and answer the questions. FIGURE 2
8.2.1Name the pump in FIGURE 2. (1\
8.2.2Identify the parts labelled A, B and C. (3\
Q8— Section header —
Q9— Section header —
9.1State SIX advantages of using pneumatic systems. (6\
9.2State the purpose of introducing a derivative controller in to a proportionally controlled pneumatic system. (2\
9.3Give TWO common errors found in pneumatic systems. (2\ 10] 8080016
Q10— Section header —
10.1The sine wave is one of the most commonly used waveforms in signal generation. Name THREE other types of waveforms. (3\
10.2Name the TWO main groups into which electronic voltmeters are classified. (2\
10.3State THREE advantages of sine waves in signal generation. (3\
10.4Name the TWO stability measure ments which can be obtained when using a sine function to test the stability of a control system. (2\ [10] TOTAL: 10010
0.1100 en-ZAPHASE (Degrees\ GAIN (dB\ 8080016