Description : If a position servo system does not respond to small changes of the input, is the system overdamped or underdamped?
Last Answer : Overdamped.
Description : What is the advantage of using a closed-servo loop to control load velocity?
Last Answer : The closed-servo loop can regulate load speed under changing conditions.
Description : The output of the sum point must contain information that controls what two factors of load movement in a position servo?
Last Answer : Amount and direction of rotation.
Description : In a properly functioning circuit, can both the input and output of an inverter be HIGH at the same time?
Last Answer : No.
Description : What is the purpose of a synchronizing network in a servo system?
Last Answer : To switch control of the amplifier between either the coarse signal and the fine error signal.
Description : What is the purpose of a demodulator in a servo system?
Last Answer : To convert an ac error signal into a dc error signal.
Description : What is the purpose of a modulator in a servo system?
Last Answer : To convert a dc error signal into an ac error signal.
Description : Why is damping needed in a practical servo system?
Last Answer : . To minimize overshoot and/or oscillations.
Description : If a position servo system tends to oscillate whenever a new position is selected, is the system overdamped or underdamped?
Last Answer : Underdamped
Description : What term is used for a series of overshoots in a servo system?
Last Answer : Hunting.
Description : What are the two functions of the servo motor in the system
Last Answer : To move the load and provide feedback data to the error detector.
Description : Needle bearing a roller bearing having a number of smaller diameter roller is well suited to a) Application involving oscillating motion b) Exceptionally high load capacity application at low peripheral speed c) Both (a) and (b) d) None of the above
Last Answer : c) Both (a) and (b)
Description : If a robot can alter its own trajectory in response to external conditions, it is considered to be ____________ a) intelligent b) mobile c) open loop d) non-servo
Last Answer : a) intelligent
Description : If a robot can alter its own trajectory in response to external conditions, it is considered to be __________ a) intelligent b) mobile c) open loop d) non-servo
Description : If a robot can alter its own trajectory in response to external conditions it is considered to be A : Intelligent B : Mobile C : Open loop D : Non-servo
Last Answer : A : Intelligent
Description : If a robot can alter its own trajectory in response to external conditions, it is considered to be: ⮚ mobile ⮚ open loop ⮚ intelligent ⮚ non-servo
Last Answer : ⮚ intelligent
Description : What is the advantage of designing a limited bandwidth into a servo amplifier?
Last Answer : Unwanted noise-generated frequencies are rejected
Description : In a typical velocity servo block diagram what device is placed in the feedback loop that is not present in the position servo?
Last Answer : Tachometer.
Description : What are the three relatively common classifications of servo systems by function?
Last Answer : Classifications in accordance with position, velocity, and acceleration functions.
Description : What is a servo?
Last Answer : A system in which the precise movement of a large load is controlled by a relatively weak control signal.
Description : select the correct response from the choices given in the parentheses. Q-20. In a closed-loop configuration the output signal is determined by (the input signal, the feedback signal, both).
Last Answer : Both the input signal and the feedback signal.
Description : Which of the following characterizes a properly terminated transmission line? A. The line loss is minimum. B. The standing wave ratio is minimum. C. The input impedance is twice the load impedance. D. The standing wave ratio is one.
Last Answer : D. The standing wave ratio is one.
Description : In an open-loop control system, what action reduces the input to zero so the load is stopped at the desired position?
Last Answer : Usually the operator senses the desired load movement and reduces the input to stop the motor.
Description : For a 2nd order servo system, the damping ratio δ = 0.5456 and undamped natural frequency is ωn = 31.6 rad/sec. The percent overshoot is (a) 7.07 (b) 10.2 (c) 14.10 (d) 21.21
Last Answer : For a 2nd order servo system, the damping ratio δ = 0.5456 and undamped natural frequency is ωn = 31.6 rad/sec. The percent overshoot is 14.10
Description : Which of the following statements dealing with simple harmonic motion of a mass-spring system is TRUE? w) The acceleration is largest when the oscillating mass is instantaneously at rest. x) The ... of the motion. z) The acceleration is larger when the oscillating mass has its greatest velocity.
Last Answer : ANSWER: W -- THE ACCELERATION IS LARGEST WHEN THE OSCILLATING MASS IS INSTANTANEOUSLY AT REST
Description : What were the first computers designed to manipulate in order to solve arithmetic problems?
Last Answer : Numbers.
Description : A bob of simple pendulum oscillating in air is made to oscillate in oil. The time period will a.Increase b.Decrease c.Not change d.Decrease but reduction depends on viscosity of oil e.None of the above
Last Answer : a. Increase
Description : What is a oscillating universe theory?
Last Answer : What is the answer ?
Description : What stores sell oscillating fans ?
Last Answer : You could find large osculating fans at Lowe's, Home Depot, DIY, as well as Sears. You could also find medium sized osculating fans at nearly any department store.
Description : Which of the following is an alternative theory to the Big Bang theory developed in 1948, stating that the universe does not change even though it is expanding over time? (1) Oscillating Universe (2) Steady State Universe (3) Mirror Universe (4) Eternal Inflation
Last Answer : (2) Steady State Universe Explanation: The Steady State theory (also known as the Infinite Universe theory or continuous creation) was developed in 1948 by Fred Hoyle, Thomas Gold, Hermann Bondi and others ... that the observable universe is basically the same at any time as well as at any place.
Description : Which of the following bearing is preferred for oscillating conditions? (a) Double row roller bearing (b) Taper roller bearing (c) Needle roller bearing (d) Angular contact single row ball bearing
Last Answer : (c) Needle roller bearing
Description : Frequency of centrifugal pendulum absorber is always proportional to A) Oscillating motion B) Transfer motion C) Speed of rotating body D) All of the above
Last Answer : C) Speed of rotating body
Description : When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a point known as (A) Centre of pressure (B) Centre of gravity (C) Centre of buoyancy (D) Metacentre
Last Answer : Answer: Option D
Description : An aircraft is flying at constant indicated altitude over a warm airmass. The altimeter reading will be: a. Correct b. Greater than the real altitude c. Less than the real altitude d. Oscillating around the correct altitude
Last Answer : c. Less than the real altitude
Description : In meter movement, how do oyu prevent the meter from oscillating and overswing?
Last Answer : by damping
Description : The rotary and oscillating tool which does not turn the soil upside down is a) Power tiller b) Rotravator c) Power harrow d) Treader and rotary tiller
Last Answer : c) Power harrow
Description : Which of the following is an alternative theory to the Big Bang theory developed in 1948, stating that the universe does not change even though it is expanding over time ? (1) Oscillating Universe (2) Steady State Universe (3) Mirror Universe (4) Eternal Inflation
Last Answer : Steady State Universe
Description : Draw and explain the response of first order and second order instruments to the step input.
Last Answer : First order instrument response to step input: The time equation for the step response of a first order instrument is exponential in nature and is given by the equation, c(t) = ... Analysis of such a system is done by calculating different parameters called time response specifications.
Description : Overall thermal efficiency of a lumpy coal fired suitably designed heating furnace, if operated & maintained properly may be about __________ percent. (A) 10-15 (B) 25-30 (C) 45-50 (D) 65-70
Last Answer : (B) 25-30
Description : For a properly designed vehicle, the resistance generally ignored, is (A) Wind resistance (B) Rolling resistance (C) Grade resistance (D) Axle resistance
Last Answer : The efficiency of a properly designed synchronous motor will usually fall in range 85 to 95%.
Description : To properly bias an NPN transistor, what polarity voltage is applied to the collector, and what is its relationship to the base voltage?
Last Answer : Positive, more positive.
Description : When is a synchro receiver (TR) properly zeroed?
Last Answer : A TR is zeroed when electrical zero voltages exist across its stator windings at the same time its rotor is on zero or on its mechanical reference position.
Description : If the ignition switch is placed in the ON position and all the engine instruments operate properly except the gas gauge, where would the fault probably be?
Last Answer : Between point (3) and the gas gauge tank unit ground.
Description : Is it possible for a transmission line to operate improperly at certain frequencies and properly at others?
Last Answer : Yes, it is quite common.
Description : List three benefits that properly cabled optical fibers provide.
Last Answer : a. Protect optical fibers from damage or breakage during installation and over the fiber's lifetime. b. Provide stable fiber transmission characteristics compared with uncabled fibers. c. Maintain the physical integrity of the optical fiber.
Description : What is the appearance of a properly soldered joint?
Last Answer : Bright and shiny with no cracks or pits.
Description : When a Triac is properly gated, what is/are the direction(s) of current flow between anodes 1 and 2?
Last Answer : Current is allowed to flow in either direction.