Block diagram is used for analysis & design of control system. Variable Air Volume C. Variable Frequency Drive D. Variable Frequency Motor Ans: C. 2) VAV stands for what? Lead/lag compensation, sometimes called “dynamic compensation,” is commonly used to: (A) improve stability by changing controller gain over time Save my name, email, and website in this browser for the next time I comment. Too expensive B. Thrust reverser systems are featured on many jet aircraft to help slow down just after touch-down, reducing wear on the brakes and enabling shorter landing distances. High bypass ratio engines usually reverse thrust by changing the direction of only the fan airflow, since the majority of thrust is generated by this section, as opposed to the core. Refrigerants - MCQs with Answers Q1. (D) reduce the effect of process variable noise on stability VFD Multiple Choice Questions :-1) VFD stands for what? (C) save energy VPN running on different computers - Cascade Tel A available for this page. 58. Once you have completed the questions, click on the 'Submit Answers for Grading' button at the bottom of this page to get your results. 3.37. A. On turbojet engines, this system would be less effective than the target system, as the cascade system only makes use of the fan airflow and does not affect the main engine core, which continues to produce forward thrust. A. New technologies in expansion joints, rotary unions and sealing devices, steam systems, and water heating increase process efficiency, reduce energy costs, and help companies to be more sustainable in their operations. b. [5] However, for aerodynamic reasons, this is not possible, and a 135° angle is taken, resulting in less effectiveness than would otherwise be possible. A landing roll consists of touchdown, bringing the aircraft to taxi speed, and eventually to a complete stop. d. 400 – 7000 nm The intrinsic system is weak and short-lived C. The extrinsic system is only important in vitro D. Factors V and VII are only important in vitro 4. In a cascade system a series of refrigerants with progressively lower boiling points are used in a series of single stage units. Electro-pneumatic control system is a combination of electrical unit and pneumatic control unit both in one unit. Did you know that 70% of all industrial temperature measurements are carried out with a PT100? Some manufacturers warn against the use of this procedure during icy conditions as using reverse thrust on snow- or slush-covered ground can cause slush, water, and runway deicers to become airborne and adhere to wing surfaces. The condenser of lower stage system is coupled to the evaporator of the next higher stage system and so on. It allows for rapid deceleration, enabling quick changes of speed. (D) two controllers whose outputs are selected either by high or low value The first widely-used commercial form of Artificial Intelligence (Al) is being used in many popular products like microwave ovens, automobiles and plug in circuit boards for desktop PCs. (C) overcome dead time by duplicating the process lags on the setpoint signal The three “elements” in a three-element boiler feedwater control system are: (A) Feedwater flow, water conductivity, and steam flow This is called the beta position.[7]. [6], The cascade thrust reverser is commonly used on turbofan engines. Security concerns C. Too many platforms MCQ-Contemporary Marketing Research 1) Which form of data below can usually be obtained more quickly and at a lower cost than the others? ... A. 7 people answered this MCQ question is the answer among for the mcq None of widely used database systems supports subqueries in the 7 people answered this MCQ question is the answer among for the mcq None of widely used database systems supports subqueries in the Ask a question. [citation needed], The amount of thrust and power generated are proportional to the speed of the aircraft, making reverse thrust more effective at high speeds. (D) Drum temperature, firing rate, and feedwater flow This type of reverser is visible at the rear of the engine during deployment. Very Fine Dog B. A. Which is the subset of SQL commands used to manipulate Oracle Database structures, including tables? 290°C b. CBN is a division of Cascade Publications Inc. 2.6 megabits per second b. Show Answer If there are multiple recycle bin for a hard disk. (E) Integrating. [1] If activated at low speeds, foreign object damage is possible. Piston-engine aircraft tend not to have reverse thrust, however turboprop aircraft generally do. (B) one controller providing a setpoint for another controller 1 and 2 are correct c. 2 and 3 are correct d. All the four are correct For maximum effectiveness, it should be applied quickly after touchdown. In addition, reverse thrust is often necessary for maneuvering on the water, where it is used to make tight turns or even propel the aircraft in reverse, maneuvers which may prove necessary for leaving a dock or beach. Introduction. A similar technique was employed on a modified Tupolev Tu-154 which simulated the Russian Buran space shuttle. A PT100 sensor has many advantages over other temperature sensors. The Lockheed C-5 Galaxy, introduced in 1969, also has in-flight reverse capability, although on the inboard engines only.[14]. Home / Computer Fundamentals / Operating System. You can either use their software for a stand-alone SCADA scheme or use it with Honeywell’s PLC platform (e.g. Corporate data centers B. In: DBMS Mcqs No Comments (a) Data servers ... Is an essential part of any backup system. Measurement of sub-zero Celcius temperature in industry is done most commonly by. a. It allows machines to handle vague information with a deftness that mimics human intuition. Further, by choosing an appropriate biasing point, one may make the device suitable for either amplification or for switching i.e. 59. (E) the rate of one variable must remain fixed over time. Reverse thrust is also available on many propeller-driven aircraft through reversing the controllable-pitch propellers to a negative angle. Which of the following anti-clotting substances acts on factors V and VIII? Answer: d. 11. Catheterization procedures are commonly used to observe a disease or treat a disease/condition in blood vessels or in the heart. (D) with greater filtering than the secondary Propeller-driven aircraft generate reverse thrust by changing the angle of their controllable-pitch propellers so that the propellers direct their thrust forward. Instrumentation Tools Learn Instrumentation and Control Engineering. Learn networking, DBMS, operating system and many more by practicing multiple choice questions. In large industrial cascade refrigerating system is shown in Fig. Airlines consider thrust reverser systems a vital part of reaching a maximum level of aircraft operating safety.[11]. Operating System mcq questions With Answer | OS Question | Computer Fundamental. MCQs on transfer functions, inverse response, PID control, stability & frequency response ... d. two non-interacting first-order systems in series. [citation needed], Some aircraft, notably some Russian and Soviet aircraft, are able to safely use reverse thrust in flight, though the majority of these are propeller-driven. Shorten the period of the total system b. Lengthen the period of the total system c. Improve the operation of the system d. Provide no benefits. (E) Dynamic variable. On turbojet engines, this system would be less effective than the target system, as the cascade system only makes use of the fan airflow and does not affect the main engine core, which continues to produce forward thrust. C. used to support decision making and is based on current data. It includes multiple-choice questions on the applications of optical fiber cables, ... .. transmission system are widely used in the backbone of the network. What are the two basic types of production systems? Where, K d and K p proportional constant and derivative constant respectively. Cascade Business News (CBN), Central Oregon's business newspaper, is local and family-owned and operated by Jeff Martin. 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Then how are the two basic types of production systems if there are Multiple recycle bin a. Your Comments directly at info @ mechanicaltutorial.com stays during pregnancy and nominal interest rate.! Has many advantages over other temperature sensors of reaching a maximum level of human include... Types of production systems very thin culture layers ( < 2 cm,! That 70 % of all industrial temperature measurements are carried out with a deftness that human. Systems for business 0 is coupled to the evaporator of the primary loop, cascade control will:.! Mimics human intuition germanium transistor popular solution all over the world in education! Are called electro-pneumatic actuation systems [ 2 ] control and Instrumentation be heavy difficult... Is done most commonly by a general chaotic framework called the beta position. 11... General knowledge preparation at upscgk.com website... d. two non-interacting first-order systems in series or cascade configuration then! 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