20 views
in Control System by
After drawing the Root-Locus, the closed-loop poles corresponding to a specified value of gain K can be determined from which of the following criterion ?

(A) Magnitude criterion alone

(B) Angle criterion alone

(C) Both Magnitude and Angle criteria

(D) Angle of departure and angle of arrival.

1 Answer

0 votes
by

After drawing the Root-Locus, the closed-loop poles corresponding to a specified value of gain K can be determined from which of the following criterion ?

(A) Magnitude criterion alone

(B) Angle criterion alone

(C) Both Magnitude and Angle criteria

(D) Angle of departure and angle of arrival.

Related questions

1 answer 14 views

In root locus plot, a point on the real axis lies on the locus, if the number of open loop poles plus zeros on real axis to the a) left of the point is odd b) left of the point is even . c) right of the pointis odd d) right of the point is even

asked May 23, 2018 in Control System by Shimroz123
1 answer 15 views

Negative feedback in a closed-loop control system DOES NOT (A) reduce the overall gain (B) reduce bandwidth (C) improve disturbance rejection (D) reduce sensitivity to parameter variation

asked Apr 26, 2018 in Control System by Shimroz123
1 answer 21 views

lf the poles of system are lying on the imaginary axis in s-plane, then the system will be

asked Apr 26, 2018 in Control System by Shimroz123
1 answer 18 views

The number of poles of 8/6 stepper motor can be :

asked Apr 30, 2018 in Electrical Machine by Shimroz123
1 answer 14 views

Whether a given point in the S-plane lies on the Root Locus of a system can be determined by (A) Magnitude criterion (B) Angle Criterion (C) Both Magnitude and Angle Criteria (D) Break-in and Break-away Criteria

asked Apr 25, 2018 in Control System by Shimroz123
1 answer 27 views

What is the time response of a system whose poles lie on the right hand side of s-plane? A) Exponentially increasing B) Exponentially decreasing C) Sinusoidal oscillations D) Step response 

asked Jun 18, 2018 in Control System by Shimroz123
1 answer 23 views

The characteristic equation for a closed loop system with forward gain K is s4 + 4s3 + 8s2 + 6s + K = 0. The critical gain value Kc for stability should not exceed  (a) 3.25 (b) 9.75 (c) 13.0 (d) 23.3

asked May 15, 2018 in Control System by Shimroz123
1 answer 13 views

In closed loop control system, with positive value of feedback gain the overall gain of the system will

asked Mar 27, 2018 in Control System by Shimroz123
0 answers 13 views

The sensitivity of a closed loop system to gain changes and load disturbances depends upon (a) forward gain (b) loop gain (c) frequency (d) all the above 

asked May 25, 2018 in Control System by Shimroz123
1 answer 20 views

For a feedback amplifier, if the loop gain is much greater than unity, the closed loop gain will be equal to

asked May 23, 2018 in Amplifier by Shimroz123
1 answer 21 views

When the initial conditions of a system are specified to be zero it implies that the system is?

asked Mar 27, 2018 in Control System by Shimroz123
1 answer 62 views

If the inertia constant H of a machine of 200 MVA is 2 p.u., its value corresponding to 400 MVA will be   (a) 4 p.u. (b) 2 p.u. (c) 1.0 p.u. (d) 0.5 p.u. 

asked May 13, 2018 in Electrical Engineering by Shimroz123
1 answer 8 views

Order of the open loop transfer function is _____ to order of closed loop transfer function   (a) not equal (b) equal (c) less than (d) greater than 

asked May 13, 2018 in Control System by Shimroz123
0 answers 9 views

By increasing the gain ‘k’ of a system, steady state error of the system (a) increases (b) decreases (c) remains unaffected (d) nothing can be said 

asked May 25, 2018 in Control System by Shimroz123
0 answers 14 views

An electromechanical closed –loop control system has the transfer function C(s)/R(s) = k/s (s2 + s +1) (s+ 4) +k. Which one of the following is correct?  (A) The system is stable for all positive values of k (B) The system is unstable for all values of k (C) The system is stable for values of k between zero and 3.36 (D) The system is stable for values of k between 1.6 and 2.45 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
1 answer 36 views

What will happen to the gain margin if the gain of the open loop system is doubled? A) Doubled B) Becomes half C) Is not affected D) Becomes one-fourth 

asked Jun 18, 2018 in Control System by Shimroz123
1 answer 19 views

Given a unity feedback system with G(s)=k/s (s+4), the value of k for damping ratio of 0.5 is

asked May 8, 2018 in Control System by Zeeshan
1 answer 29 views

An OP amp has an open loop gain of 1,00,000. If the feedback fraction is 0.02, the approximate closed loop gain is (a) 1 (b) 1,00,000 (c) 50 (d) 0.02

asked Apr 14, 2018 in Electrical Engineering by Shimroz123
1 answer 19 views

The closed loop gain of an OPAMP is dependent upon, whether the OP AMP is used : -  a) in inverting mode b) in non -inverting mode c) is independent of the fact whether the input is connected to inverting or non -inverting terminal d) is depending upon the fact whether the input is connected to inverting or non -inverting terminal

asked Apr 10, 2018 in Instrumentation and control by Shimroz123
1 answer 36 views

What are some examples of a closed loop system?

asked Mar 10, 2018 in Control System by Quiz
1 answer 11 views

In the ideal closed loop operational amplifier, the gain depends on (A) value of the series component (B) value of the feedback component (C) on the operational amplifier itself (D) both A and B

asked May 12, 2018 in Electronics communication by Shimroz123
1 answer 517 views

In the Bode plot of a unity feedback control system, the value of phase of G(jw) at the gain cross -over frequency is - 125°.. The phase margin of the system is (a) - 125° (b) - 55° (c) 55° (d) 125°

asked Apr 23, 2018 in Control System by Shimroz123
1 answer 10 views

In a closed loop control system  (a) control action depends upon the output and also on the input command (b) output signal is fed back to be compared with the reference signal (c) the accuracy is better than in the open loop system (d) all of the above

asked Apr 9, 2018 in Control System by Shimroz123
1 answer 10 views

_____is a closed loop system.

asked Mar 27, 2018 in Control System by Shimroz123
1 answer 43 views

If the gain of the open loop system is doubled, the gain margin  (1) Is not affected (2) Gets doubled (3) Becomes half (4) Becomes one -forth

asked Apr 30, 2018 in Control System by Shimroz123
1 answer 13 views

In a 5 bit weighted resistor D/A converters, the resistor value corresponding to LSB is 40 kΩ, and the resistor value corresponding to MSB will be (A) 0.4 kΩ (B) 3 kΩ (C) 2.8 kΩ (D) 2.5 kΩ

asked Apr 28, 2018 in Digital Electronics by Shimroz123
1 answer 58 views

A differential amplifier has a differential gain of 28000 and CMRR is 60 dB. What will be the value of common mode gain? A) Ac = 0.125 B) Ac = 0.33 C) Ac = 3 D) Ac = 28 

asked Jun 18, 2018 in Electronics Engineering by Shimroz123
0 answers 8 views

In a second order system the value of resonant peak will be unity when the damping ratio has a value of  A) Zero B) Unity C) 0.707 D) 0.414

asked Apr 9, 2018 in Control System by Shimroz123
0 answers 16 views

As compared to a closed loop system an open loop system is  (a) more stable as well as more accurate (b) less stable as well as less accurate (c) more stable but less accurate (d) less stable but more accurate

asked Apr 9, 2018 in Electronics Engineering by Shimroz123
1 answer 26 views

A unity negative feedback control system is found to have a gain margin of 20 dB. The Nyquist plot of the system (A) crosses the real axis at +0.1 (B) crosses the real axis at -0.1. (C) crosses the imaginary axis at -0.1 (D) crosses the imaginary axis at +0.1

asked Apr 28, 2018 in Control System by Shimroz123
1 answer 21 views

A system has 14 poles and 2 zeros in its open -loop transfer function. The slope of its highest frequency asymptote in its magnitude plot is (a) - 40 dB/dec (b) - 240 dB/dec (c) + 40 dB/dec (d) + 240 dB/dec

asked Apr 25, 2018 in Electrical Engineering by Shimroz123
1 answer 37 views

If the characteristics equation of a closed loop system is s2+2s+2=0, then the system is  (A) Over damped (B) Critically damped (C) Under damped (D) Undamped 

asked Apr 5, 2018 in Electrical Engineering by Shimroz123
1 answer 12 views

The root directory of a disk should be placed  A) At a fixed address in the main memory B) At a fixed location on the disk C) Anywhere on the disk D) All of the above

asked Apr 11, 2018 in Computer Engineering by Shimroz123
1 answer 24 views

The gain of an ideal amplifier must be

asked Apr 26, 2018 in Control System by Shimroz123
0 answers 13 views

For better relative stability, the values of gain margin and phase margin should be respectively  A) 6 db, 15 degree B) 10 db, 15 degree C) 10 db, 30 degree D) 6 db, 30 degree

asked Apr 9, 2018 in Control System by Shimroz123
1 answer 18 views

A signal other than the reference input that tends to affect the value of controlled variable is known as ?

asked Mar 27, 2018 in Control System by Shimroz123
0 answers 22 views

An open-loop system is better than a closed-loop system in terms of   (a) Accuracy (b) Stability (c) Noise reduction (d) Sensitivity  

asked Apr 10, 2018 in Electrical Engineering by Shimroz123
1 answer 14 views

The gain of an FET amplifier can be changed by changing: (1) rm (2) gm (3) Rd (4) None of these

asked May 28, 2018 in Amplifier by Shimroz123
1 answer 24 views

An A.C current is given by i=100sin100. It will achieve a value of 50 A after (1) 1/600 sec (2) 1/300 sec (3) 1/1800 sec (4) 1/900 sec 

asked Apr 11, 2018 in Electrical Engineering by Shimroz123
1 answer 31 views

How can the steady-state error in a system be reduced?  (1) By decreasing the type of system (2) By increasing system gain (3) By decreasing the static error constant (4) By increasing the input

asked May 1, 2018 in Control System by Shimroz123
1 answer 12 views

Which of the following instruments can be used for measurement of very high value resistances such as insulation resistance in industries? A) Wheatstone bridge B) Megger C) Ohm-meter D) Resistive potentiometer 

asked Jun 17, 2018 in Electrical Measurements and Instrumentation by Shimroz123
1 answer 17 views

In R-L-C series resonant circuit magnitude of resonance frequency can be changed by changing the value of?

asked Mar 25, 2018 in Electrical Engineering by Shimroz123
1 answer 101 views

The loop transfer of a system is G(s) H(s) = 5/(s+1) (2s+1)(3s+1) which has the phase crossover frequency fc = 0.16 Hz. The gain margin (dB) of the system is  (a) 6 (b) 4 (c) 2 (d) 0

asked May 15, 2018 in Control System by Shimroz123
1 answer 18 views

The time constant of the servo-mechanism can be decreased by

asked Apr 26, 2018 in Control System by Shimroz123

Welcome to electronics2electrical.com here you can ask questions related to electrical, electronics, mechanical, telecommunication, instrumentation, computer, mathematics, physics etc.
Be respectful to all the members. Do not copy and paste the answers from other websites which have copyright content. While asking question give full details about it.

Categories

Most popular tags

power motor dc circuit transformer voltage current used system phase resistance factor synchronous load ac energy induction electric generator series frequency between speed capacitor use electrical meter line difference control type mosfet transmission magnetic plant high single instrument bjt unit source advantages function diode and machine winding field define torque parallel amplifier supply shunt thyristor motors electricity arduino maximum time relay armature problem value on transformers types coil diagram state flow ratio material three formula starting direction theorem method emf operating efficiency digital wave microprocessor test instruments inductance loss measure operation connected signal low applications effect single-phase network temperature working constant losses different law wattmeter measuring compare controlled breaker drive device logic rc full switch flux wire resistivity disadvantages free of materials machines angle force converter conductor transistor gain open protection scr core measurement number bridge principle generators reactance circuits negative the friction iron loop short pole battery conservation steam resistors hysteresis computer using analog lines secondary station gate a rectifier inverter linear induced relays nuclear capacitance basic characteristics design direct work rotor electronics ammeter forces diesel damping rlc connection factors capacitors minimum insulation moving regulation running self systems air fault range main stability quality starter igbt eddy alternator ideal rl average 3-phase plants arc thermal error fuzzy biasing dielectric pressure balanced superposition errors copper rotation feedback impedance measured electronic electrons charge inductive transfer explain start off back curve over solar is three-phase tariff locomotive peak bias zener engineering commutator surge conductors rating universal potentiometer density permanent mechanical transducer capacity memory adc excitation two fuse pure harmonics application semiconductor inductor internal pmmc reaction welding resonance traction permeability breakers rms designed electromagnetic si generation brushes switching capacitive shaded rate 1 distribution resistor methods delta star oscillator reluctance simplification algebra 8085 boolean weston dynamometer insulating strength installation definition fuel heating earth units
...