If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is not necessarily stable.
Description : The voltage at the reference electrode of the circuit shown in the illustration is applied to the input of a/an ______________. EL-0090 A. class A detector whose output drives an ... drives an 2-stage isolation transformer D. magnetic amplifier whose output controls a saturable reactor
Last Answer : Answer: D
Description : If stability error for step input and speed of response be the criteria for design, what controller would you recommend (1) P controller (2) PD controller (3) PI controller (4) PID controller
Last Answer : If stability error for step input and speed of response be the criteria for design, what controller would you recommend (1) P controller (2) PD controller (3) PI controller (4) PID controller
Description : Consider a continuous-time system with input x(t) & output y(t) are related by y(t) = x (sin t). This system is (A) causal & linear (B) non-causal & linear (C) causal & non-linear (D) non-causal & non-linear
Last Answer : Consider a continuous-time system with input x(t) & output y(t) are related by y(t) = x (sin t). This system is non-causal & linear
Description : List any four input and four output devices used with PLC.
Last Answer : Input device: 1. Push button. 2. Temperature switches. 3. Limit switches. 4. Pressure switches. 5. Level Switches. 6. Proximity Switches. Output devices: 1. Motor. 2. Display. 3. Heater coil. 4. Relay. 5. Lamp. 6. Buzzer.
Description : The initial response when the output is not equal to input is called?
Last Answer : The initial response when the output is not equal to input is called Transient response.
Description : The output of a feedback control system must be a function of?
Last Answer : The output of a feedback control system must be a function of reference and output.
Description : Which terminology deals with the excitation or stimulus applied to the system from an external source for the generation of an output? a. Input signal b. Output signal c. Error signal d. Feedback signal
Last Answer : Ans: A
Description : Which technique can be used to achieve input and output coverage? It can be applied to human input, input via interfaces to a system, or interface parameters in integration testing. A. Error Guessing B. Boundary Value Analysis C. Decision Table testing D. Equivalence partitioning
Last Answer : D. Equivalence partitioning
Description : Which technique can be used to achieve input and output coverage? It can be applied to human input, input via interfaces to a system, or interface parameters in integration testing. a) Error Guessing b) Boundary Value Analysis c) Decision Table testing d) Equivalence partitioning
Last Answer : d) Equivalence partitioning
Description : If the electricity represented by the wave form in 'B' were applied to the left side of the illustrated circuit, the output on the right side would be ____________. EL-0064 A. direct current with the ... lower lead D. clipped to a value equal to the square root of 3 times the input voltage value
Last Answer : Answer: C
Description : Transmissibility is the ratio of a. force transmitted and exciting force b. force applied and the resulting displacement c. input displacement and output displacement
Last Answer : a. force transmitted and exciting force
Description : When an input signal A=11001 is applied to a NOT gate serially, its output signal is (A) 00111. (B) 00110. (C) 10101. (D) 11001.
Last Answer : When an input signal A=01001 is applied to a NOT gate serially , it's output signal is
Description : This bistable electronic device assumes one of two stable output states, depending upon the state of the most recently applied input signal. In computer systems this device is used for storing information. Name this common electronic device.
Last Answer : ANSWER: FLIP-FLOP or TOGGLE
Description : If output voltage is greater than input voltage, then transformer is A. step up B. step down C. faulty D. fatal
Last Answer : step up
Description : In step down transformer, the AC output gives the current _________ than the input current.
Last Answer : more
Description : A second order system shows 100% overshoot in its unit step response. It can be categorized as (A) underdamped system. (B) overdamped system. (C) Critically damped system. (D) undamped system.
Last Answer : A second order system shows 100% overshoot in its unit step response. It can be categorized as undamped system.
Description : What is the steady state error of type-0 system for ramp input? A) ∞ B) A/K C) A/(1+K) D) 0
Last Answer : What is the steady state error of type-0 system for ramp input? A) ∞ B) A/K C) A/(1+K) D) 0
Description : For a feedback control system of type 2, the steady error for a rap input is A) Infinite B) Constant C) Zero D) Indeterminate
Last Answer : For a feedback control system of type 2, the steady error for a rap input is Zero
Description : Velocity error constant of a system is measured when the input to the system is unit _______ function.
Last Answer : Velocity error constant of a system is measured when the input to the system is unit ramp function.
Description : The transfer function of a system is 10/(1+s) when operating as a unity feedback system, the steady state error to a step input will be a) 0 b) 1/11 c) 10 d) Infinity
Last Answer : Ans: 1/11
Last Answer : In a closed-loop system in which the output is the speed of a motor, the output rate control can be used to limit the acceleration of the motor.
Description : In a control system the output of the controller is given to?
Last Answer : In a control system the output of the controller is given to final control element.
Description : A control system in which the control action is somehow dependent on the output is known as?
Last Answer : A control system in which the control action is somehow dependent on the output is known as Closed loop system.
Description : Draw the block diagram of discrete input module & explain each block.
Last Answer : Power conversion: It consists of rectifier which converts the incoming AC signal to a pulsating dc level, which is passed through filter and other logic in order to deliver a clean and denounced dc ... Logic section: It passes the input signal to the module s input address LED and the CPU.
Description : _________is the reference input minus the primary feedback.
Last Answer : Actuating signal is the reference input minus the primary feedback.
Description : A signal other than the reference input that tends to affect the value of controlled variable is known as ?
Last Answer : A signal other than the reference input that tends to affect the value of controlled variable is known as disturbance.
Description : Draw typical wiring details & four specifications of AC output module of PLC.
Last Answer : The below figure show the basic field wiring for digital 120V AC output module. The Wiring diagrams show how wires of output devices are connected to screw terminals of PLC modules. As per the wiring ... excessive current from damaging the wiring to the field devices. Specifications:-
Description : A phase lag lead network introduces in the output?
Last Answer : A phase lag lead network introduces in the output lag at low frequencies and lead at high frequencies.
Description : Any externally introduced signal affecting the controlled output is called a?
Last Answer : Any externally introduced signal affecting the controlled output is called a stimulus.
Description : When the input of a function is -4 what is the output of the function.?
Last Answer : Depending on the function, it can have any value whatsoever.
Description : Consumptions function refers to - (1) relationship between income and employment (2) relationship between savings and investment (3) relationship between input and output (4) relationship between income and consumption
Last Answer : (4) relationship between income and consumption Explanation: The Consumption function is a single mathematical function used to express consumer spending. It was developed by John Maynard Keynes and ... by current income and induced consumption that is influenced by the economy's income level.
Description : Production function refers to the functional relationship between input and _______. (1) product (2) produce (3) output (4) service
Last Answer : (3) output Explanation: The Production function expresses a functional relationship amidst quantities of raw materials and goods. It is the name given to the relationship between rates of input of productive services and the rate of output of product.
Description : Production function relates - (1) Cost to output (2) Cost to input (3) Wages to profit (4) Inputs to output
Last Answer : (4) Inputs to output Explanation: Production function specifies the output of a firm, an industry, or an entire economy for all combinations of inputs. The relationship of output to inputs is ... relates physical inputs to physical outputs, and prices and costs are not reflected in the function.
Description : The 'function generator' of the control circuit illustrated _______________. EL-0095 A. can be programmed to produce a non-linear output for a linear input depending on operating conditions B. is used for ... which or how many engines are needed for a required vessel speed D. all of the above
Last Answer : Answer: A
Description : Basic operating characteristics of the operational amplifier such as gain and stability are the function of its _____________. A. differential input stage B. power output stage C. feedback circuit D. supply voltages
Description : If we define putchar function in putchar :. char -> IO () syntax than character input as an argument andreturns a. Useful value b. Get output c. Getno output d. None of these
Last Answer : c. Getno output
Description : A 4-input neuron has weights 1, 2, 3 and 4. The transfer function is linear with the constant of proportionality being equal to 2. The inputs are 4, 10, 5 and 20 respectively. The output will be: a) 238 b) 76 c) 119 d) 123
Last Answer : a) 238
Description : Leontief’s input output model is based on the concept of----- (a) Consumption function (b) Partial Equilibrium © General Equilibrium. (d) All of the above.
Last Answer : © General Equilibrium.
Description : An artificial neurons receives n inputs x1, x2,...,xn with weights w1,w2,...,wn attached to the input links. The weighted sum ............... is computed to be passed on to a non-linear filter ϕ called activation function to release the output. (A) Σ wi (B) Σ xi (C) Σ wi + Σ xi (D) Σ wi . Σ xi
Last Answer : (D) Σ wi . Σ xi
Description : Consumptions function refers to (1) relationship between income and employment (2) relationship between savings and investment (3) relationship between input and output (4) relationship between income and consumption
Last Answer : relationship between income and consumption
Description : Production function refers to the functional relationship between input and ___. (1) product (2) produce (3) output (4) service
Last Answer : output
Description : Production function relates (1) Cost to output (2) Cost to input (3) Wages to profit (4) Inputs to output
Last Answer : Inputs to output
Description : The dc gain of the system represented by the transfer function G(s)=(s+6)/((s+2)(s+3)) is A) 1 B) 2 C) 5 D) 6
Last Answer : For dc gain substitute s=0 in the given transfer function Ans:option A
Description : If a net force of 0.2 N is applied in step c use the space below to calculate how fast the yo-yo accelerates?
Last Answer : Not enough information. But basically, you need to use Newton'sSecond Law: you need to divide the force by the mass of theyo-yo.
Description : A unit step voltage is applied at t = 0 to a series RL circuit with zero initial conditions A) It is possible for the current to be oscillatory B) The voltage across the resistor at t ... The energy stored in the inductor in the steady state is zero D) Theresistor current eventually falls to zero
Last Answer : A
Description : A step voltage E is applied to a series R-L circuit. The rate of change of current is maximum at t = _: (1) Zero (2) Infinity (3) L/R (4) R/L
Last Answer : A step voltage E is applied to a series R-L circuit. The rate of change of current is maximum at t = Zero.
Description : 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
Last Answer : Order of the open loop transfer function is equal to order of closed loop transfer function
Description : A transfer function has a second order denominator and constant gain in the numerator
Last Answer : A transfer function has a second order denominator and constant gain in the numerator the system has two zeros at infinity
Description : With the knowledge of the state variable representation of a plant the transfer function of the plant
Last Answer : With the knowledge of the state variable representation of a plant the transfer function of the plant can be determined completely
Description : The state equations in the phase variable canonical form can be obtained from the transfer function by (a) Cascade decomposition (b) Direct decomposition (c) Inverse decomposition (d) Parallel decomposition
Last Answer : The state equations in the phase variable canonical form can be obtained from the transfer function by Direct decomposition