#1
16th July 2014, 04:14 PM
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JENCO exams previous year papers
Here I am looking for the JENCO Control Systems exams previous year papers, can you provide me the same???
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#2
17th July 2014, 08:45 AM
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Re: JENCO exams previous year papers
This is the JENCO Control Systems exams previous year paper: JENCO Control Systems exams previous year paper 1. Electronic control systems have the serious draw-backs of (a) low reliability (b) operational difficulty (c) temperature sensitiveness (d) all of above 2. The system whose characteristic equation has the following roots is marginally stable (a) -j, j, -1,1 (b) -3,-2,0 (c) -2+3j, -2-3j, -2 (d) -3,-2,-1 3. A phase log compensation will (a) improve relative stability (b)increase the speed of response (c)increase band-width (d) increase overshoot 4. For Nyquist plot we use a. open loop function b. closed loop function c. characteristic equation d. any of the above • A system with gain margin close to unity or a phase margin close to zero is a. highly stable b. oscillatory c. relatively stable d. none of these • Root locus diagram exhibits the a. frequency response of a system b. poles of the transfer function for a set of parameter values c. bandwidth of system d. all of the above • Increase in the gain K makes the system a. more stable b. unstable c. none of above • The transfer function of a system is used to determine a. the output for a given input b. the type of system c. the input for a given output d. the steady state gain • In a servo system the voltage induced in the control transformer rotor is the a. error voltage b. driving voltage c. opposing voltage d. none of these • With the feedback system, the transient response a. decays slowly b. decays rapidly c. rises slowly d. rises quickly |