PID Controller Question & Answers May 30, 2022 By WatElectronics This article lists 75 PID Controller MCQs for Engineering Students. All the PID Controller Questions & Answers given below include solutions and links to the relevant topic. This is helpful for users who are preparing for their exams and interviews, or professionals who would like to brush up on the fundamentals of the PID controller. The controllers are a very important component in a control system, which are usually used to control the steady-state error or transient response of the system. The proportional, proportional-integral, proportional integral derivative, and proportional derivate are the types of controllers. The P controller is a proportional controller, it is a device that produces an output that is proportional to the input signal. The proportional controller improves the steady-state error and also the stability of the system. It decreases the sensitivity of the system to parameter variations. The main disadvantage of a proportional controller is that it provides a constant steady-state error. The PI controller is a proportional-integral controller, it is a device that produces an output signal that consists of two terms one is proportional to the input system and the other one is proportional to the integral of the system. The PID controller is a proportional integral derivative system, this controller is very effective for slower processes. The response is faster in the PID controller compared to the PI controller. In PID controller some amount of overshoot may occur but in PI the overshoot doesn't occur. 1). The function of the proportional mode is to ____________? Provide gain Eliminate offsets To speed up the response and minimize the overshoot All of the above Hint 2). In which one of the following controllers, the performance will improve with time? PID ANN Both a and b None of the above Hint 3). In which one of the following controllers the rate of recovery is poor? PID ANN Both a and b None of the above Hint 4). Which one of the following constants is represented by Kp? Proportional Integral Derivative All of the above Hint 5). The function of the proportional plus integral mode is to ____________? Provide gain Eliminate offsets To speed up the response and minimize the overshoot All of the above Hint 6). The PID controller is very effective for _____________ processes? Slower Faster Poor None of the above Hint 7). In which one of the following controllers some amount of overshoot may occur? PID PI Both a and b None of the above Hint 8). What is the standard form of PID controller? Proportional Integral Derivative Proportional Internal Derivative Proportional Integral Diffusion None of the above Hint Read more about PID Controller 9). In which one of the following controllers, the response is fast? PID PI Both a and b None of the above Hint 10). Which one of the following controllers improves steady state error and also stability of the system? P controller PI controller Both a and b None of the above Hint 11). which one of the following controllers increases the order of the system by one? PI controller P controller Both a and b None of the above Hint 12). The function of the proportional plus derivative mode is to ____________? Provide gain Eliminate offsets To speed up the response and minimize the overshoot All of the above Hint 13). In ___________ controller device, the output signal is proportional to input signal? PI controller P controller Both a and b None of the above Hint 14). What is the disadvantage of proportional controller? Improves stability of the system Improves steady state error Provides a constant steady state error None of the above Hint 15). What is the disadvantage of proportional integral controller? Reduces steady state error Increases the order of system System will be less stable None of the above Hint 16). In ___________ controller device, the output signal is proportional to input signal and derivative of input signal? PI controller P controller PD controller None of the above Hint 17). Which one of the following controllers increases the damping ratio of the system? Proportional controller Proportional Derivative controller Proportional integral controller None of the above Hint 18). Which one of the following controllers produces the output in three terms? Proportional controller Proportional Derivative controller Proportional Integral controller Proportional Integral Derivative controller Hint 19). The figure shown below is a circuit diagram of ___________ controller? Proportional Proportional integral Proportional Derivative None of the above Hint 20). Which one of the following controllers used for very noisy systems? Proportional Integral Derivative None of the above Hint 21). The difference between the set points and the measured signal is known as ______________? Error Bias Both a and b None of the above Hint 22). The ratio of the change in output to the change in input is known as ___________? Controller gain Controller output Both a and b None of the above Hint 23). The constant used in the integral action equation is known as _____________ ? Controller output Controller output before integration Controller gain None of the above Hint 24). The differential change in error used in the derivative action equation is known as _____________? Change in error Change in time Both a and b None of the above Hint 25). The advantage of proportional controller is ___________? Fast response time Minimizes fluctuations Contains large offset Both a and b Hint PID Controller MCQs for Interviews 26). What are the advantages of integral controller? Contains small offset Slow response time Both a and b None of the above Hint 27). The function of the proportional integral derivative mode is to ____________ ? Eliminate offsets To speed up the response and minimize the overshoot Both a and b None of the above Hint 28). Which one of the following controllers is very effective for faster processes? PID PI Both a and b None of the above Hint 29). The overshoot doesn't occur in ____________ type of controller? PID PI Both a and b None of the above Hint 30). Which one of the following controllers reduces the steady state error? P controller PI controller Both a and b None of the above Hint 31). In ___________ controller device, the output signal is proportional to input signal and also integral to input signal? PI controller P controller Both a and b None of the above Hint 32). The figure shown below is a circuit diagram of ___________ controller? Proportional Proportional integral proportional Derivative PID controller Hint 33). The pressure control, flow control are the examples of ______________ controller? Proportional Integral Derivative None of the above Hint 34). The maximum response time interval of classical feedback PID controller is _____________ ? 10 sec 20 sec 0.1 to 5.0 sec None of the above Hint 35). Which one of the following controllers is a type of classical feedback control? PID Demand based control Intelligent iterative control Both b and c Hint 36). What is the advantage of proportional controller? Improves stability of the system Improves steady state error Provides a constant steady state error Both a and b Hint 37). The rate of recovery is very fast in _______________ controller? PID ANN Both a and b None of the above Hint 38). In which one of the following controllers, the response is slow? PID controller PI controller Both a and b None of the above Hint 39). Which one of the following controls multiple outputs and multiple inputs? SISO MIMO Both a and b None of the above Hint 40). The bread toaster is an example for _____________ loop control system? Open Close Both a and b None of the above Hint 41). A system with more than one output variable or more than one input variable is known as __________ system? Multivariable control Single control Double control None of the above Hint 42). The output values are added in _______________ control system? Positive feedback Negative feedback Both a and b None of the above Hint 43). What is the standard form of ISE? Internal Stability Error Internal Sample Error Integral of Square Error None of the above Hint 44). In proportional integral controller ________________ parameters will decrease? Rise time Settling time Overshoot All of the above Hint 45). Which one of the following controllers is a type of analog controller? P, D, I controllers PI, PD controllers PID controller All of the above Hint 46). The figure shown below is a block diagram of ______________ control structure? Block Diagram of Control System PID controller PI controller Feedforward control None of the above Hint 47). The feedforward control is used only if the accuracy of measurement is __________ ? Low Very low No impact High Hint 48). Which one of the following parameters will increase in proportional integral controller? Rise time Settling time Overshoot Both b and c Hint 49). The maximum response time interval of demand-based controller is _____________ ? 10 sec 20 sec 0.5 to 5.0 min None of the above Hint 50). The thermostats, float values, humidistat, etc are the examples of ____________ controller? Proportional Integral Derivative None of the above Hint PID Controller MCQs for Exams 51). The controller output when the error is equal to zero is known as ______________? Error Bias Both a and b None of the above Hint 52). What is the standard form of ITAE? Internal of Absolute Error Integral of Absolute Error Integral of Time Absolute Error None of the above Hint 53). If the parameter integral gain increases, then the accuracy ______________ ? Improves No impact Decreases Deteriorates Hint 54). what is the advantage of derivative controller? Slow response time Keeps system at consistent setting Requires combined use with another controller Both a and c Hint 55). Which one of the following control is a type of relational controls? PID Demand based control Intelligent iterative control Both b and c Hint 56). In which one of the following control system, the output values are subtracted? Positive feedback Negative feedback Both a and b None of the above Hint 57). The constant used in the derivative action equation is known as _____________? Controller output Controller output before integration Derivative time None of the above Hint 58). The figure shown below is a block diagram of ______________ controller? PD controller PI controller Two SISO PID Loops None of the above Hint 59). What is the standard form of ITSE? Internal Square Error Internal Time Square Error Integral of Time Square Error None of the above Hint 60). In which one of the following controllers, the performance will not improve with time? PID ANN Both a and b None of the above Hint PID Controller MCQs for Quiz 61). Which one of the following controls have only one output and one input? SISO MIMO Both a and b None of the above Hint 62). What is the standard form of LFT? Linear Fractional Transformations Linear Formal Transformations Linear Frictional Transformations None of the above Hint 63). The voltage output from the controller usually relating to the actuating signal is known as _________________? Controller gain Both a and b Controller output None of the above Hint 64). The differential change in time used in the derivative action equation is known as _____________? Change in error Change in time Both a and b None of the above Hint 65). Which one of the following is an example for actuators? Microphone Microswitch Solenoid Both a and b Hint 66). The maximum response time interval of intelligent iterative control is _____________? 10 sec 20 sec 0.5 to 5.0 min None of the above Hint 67). If the parameter derivative gain increases, then the accuracy ______________? Improves No impact Decreases Deteriorates Hint 68). The figure shown below is a block diagram of ______________ controller? PD controller PI controller PID controller None of the above Hint 69). Which one of the following is an example for control processor? Microphone Microswitch Human operator Both a and b Hint 70). Which one of the following is an example for sensors? Microphone Microswitch Human operator Both a and b Hint Read more about Sensors 71). What is the disadvantage of proportional controller? Fast response time Minimizes fluctuations Contains large offset Both a and b Hint 72). The internal model control categorizes into ____________ types? One Two Three Four Hint 73). What is the standard form of IAE? Internal Error Internal Absolute Error Integral Absolute Error None of the above Hint 74). The figure shown below is a block diagram of ______________ controller? PD controller PI controller PID controller None of the above Hint 75). What is the standard form of IMC? Internal Machine Control Internal Mode Control Internal Model Control None of the above Hint Please fill in the comment box below. Time's up