Control Systems When the input to a system was with drawn at t = 0, its output was found to decrease exponentially from 1000 units to 500 units in 1.386 sec. The time constant of the system is 2.000. 0.693. 0.500. 1.386. 2.000. 0.693. 0.500. 1.386. ANSWER DOWNLOAD EXAMIANS APP
Control Systems The open loop transfer function of a unity feedback control system is given by G(s) = k/s(s+1). If the gain k is increased to infinity, then damping ratio will tend to become infinite unity zero 0.707 infinite unity zero 0.707 ANSWER DOWNLOAD EXAMIANS APP
Control Systems The system function N(s) = V(s)/I(s) = (s+3)/(4s+5). The system is initially at rest. If the excitation i(t) is a unit step, which of the following is the final value? 1 0 1/4 3/5 1 0 1/4 3/5 ANSWER DOWNLOAD EXAMIANS APP
Control Systems An open loop control system, represented by the transfer function G ( s ) = ( s - 1 ) / ( s + 2 )( s + 3 ), is unstable and of the non minimum phase type . stable and of the minimum phase type. stable and of the non-minimum phase type. unstable and of the minimum phase type. unstable and of the non minimum phase type . stable and of the minimum phase type. stable and of the non-minimum phase type. unstable and of the minimum phase type. ANSWER DOWNLOAD EXAMIANS APP
Control Systems Consider the following statements for phase lead compensation: nether 1 nor 2 The maximum phase lag occurs at the arithmetic mean of the two corner frequencies. Phase lead compensation shifts the gain crossover frequency to the right both 1 and 2 nether 1 nor 2 The maximum phase lag occurs at the arithmetic mean of the two corner frequencies. Phase lead compensation shifts the gain crossover frequency to the right both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Control Systems For a second order under damped system subjected to unit step input the time response has first peak value to be 4 times the second over shoot. Determine the damping ratio ξ ? 0.087 0.87 0.707 0.07 0.087 0.87 0.707 0.07 ANSWER DOWNLOAD EXAMIANS APP
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