Description : Without strapping, the resonant cavities of a hole-and-slot anode are connected in what manner?
Last Answer : Series.
Description : Which subscript, in circular waveguide classification, indicates the number of full-wave patterns around the circumference?
Last Answer : First.
Description : What is the typical frequency range about the center frequency of a tunable magnetron?
Last Answer : . ±5 percent.
Description : What is the effect on magnetron operation if the magnetic field strength is too high?
Last Answer : The magnetron will not oscillate.
Description : What is the frequency range of magnetron oscillators?
Last Answer : 600-30,000 megahertz.
Last Answer : ±5 percent.
Last Answer : . 600-30,000 megahertz.
Description : Name the procedure used to reduce excessive arcing in a magnetron?
Last Answer : Baking in.
Description : Capacitive tuning by inserting a ring into the cavity slot of a magnetron is accomplished by what type of tuning mechanism?
Last Answer : . A cookie-cutter tuner
Description : Magnetron tuning by altering the surface-to-volume ratio of the hole portion of a hole-and-slot cavity is what type of tuning?
Last Answer : Inductive.
Description : Why is the pi mode the most commonly used magnetron mode of operation
Last Answer : Greater power output.
Description : What are the electrons called that give up energy to the ac field in a magnetron?
Last Answer : Working electrons.
Description : Why is the negative-resistance magnetron often operated with reduced filament voltage?
Last Answer : To reduce the effects of filament bombardment.
Description : What starts the oscillations in a negative-resistance magnetron?
Last Answer : The application of the proper magnetic field.
Description : What is the primary difference in construction between the basic magnetron and the negativeresistance magnetron?
Last Answer : The negative-resistance magnetron has a split plate
Description : A magnetron will produce oscillations when the electrons follow what type of path?
Last Answer : Circular.
Description : What element in the magnetron causes the curved path of electron flow?
Last Answer : The permanent magnet.
Description : What controls the output frequency of a magnetron?
Last Answer : . The resonant cavities.
Description : What serves as a grid in a magnetron?
Last Answer : A magnetic field.
Description : The circumference of the base of a cylindrical -Maths 9th
Last Answer : Height of the cylindrical vessel (h) = 25 cm Let r cm be the radius of the base of the cylindrical vessel. Circumference of the base = 2 πr = 132 cm ⇒ 2 x 22/7 x r = 132 ⇒ r = 132 x 7/2 x 22 = 21 ... 21 x 21 x 25 = 34650 cm3 ∴ Volume of water which vessel can hold = 34650 L/ 1000 L = 34.65 L
Description : The cavities of a multicavity klystron are tuned to slightly different frequencies in what method of tuning?
Last Answer : Stagger tuning.
Description : In a multicavity klystron, tuning all the cavities to the same frequency has what effect on the bandwidth of the tube?
Last Answer : The bandwidth decreases.
Description : Fire refining process is employed in case of (A) Tin (B) Copper (C) Zinc (D) Aluminium
Last Answer : (B) Copper
Description : The resonant frequency of electron wobble can be changed by variation of what force?
Last Answer : The applied magnetic field.
Description : Inductive tuning of a resonant cavity is accomplished by placing a nonmagnetic slug in what area?
Last Answer : The area of maximum H lines.
Description : What two variables determine the primary frequency of a resonant cavity?
Last Answer : Size and shape of the cavity.
Description : How will an iris that has portions along both the "a" and "b" dimension walls act at the resonant frequency?
Last Answer : As a shunt resistance.
Description : What is the band of frequencies called that is included between the two points at which current falls to 70 percent of its maximum value in a resonant circuit?
Last Answer : Bandwidth of the circuit
Description : In a parallel-resonant circuit, what is the relationship between impedance and current?
Last Answer : Maximum impedance, minimum current.
Description : . In an "ideal" resonant circuit, what is the relationship between impedance and current?
Last Answer : Impedance low Current high.
Description : If the inductor and capacitor values are increased, what happens to the resonant frequency?
Last Answer : Decreases.
Description : . A non-resonant line is a line that has no standing waves of current and voltage on it and is considered to be flat. Why is this true?
Last Answer : The load impedance of such a line is equal to Z0.
Description : What is the impedance of a crystal at its resonant frequency when it is used in the series mode?
Last Answer : Minimum.
Description : What is the impedance of a crystal at its resonant frequency when it is used in the parallel mode?
Last Answer : Maximum
Description : What equipment uses a calibrated resonant circuit to measure frequency?
Last Answer : Wavemeter.
Description : The beam from a horizontally positioned cylindrical paraboloid is narrow in what plane?
Last Answer : . Vertical.
Description : From a wooden cylindrical block, whose diameter is equal to its height, a sphere of maximum possible volume is carved out. -Maths 9th
Last Answer : answer:
Description : A cylindrical block of wood floats in water with four-fifth of its volume submerged in water. The relative density of wood is (a) 0.8 (b) 0.9 (c) 1.0 (d) 1.2
Last Answer : Ans:(a)
Description : Speed of an object travelling around a circle depends upon A. angular velocity B. radius C. circumference D. both A and B
Last Answer : both A and B
Description : Which of the following types of HPA is not used in earth stations? A. TWT B. Transistor C. Klystron D. Magnetron
Last Answer : D. Magnetron
Description : What do you call a circuit that controls the magnetron output? A. Inverter B. Impeller C. Modulator D. Converter
Last Answer : C. Modulator
Description : Low-power radar uses A. RIMPATT B. TRAPATT C. Magnetron D. IMPATT
Last Answer : D. IMPATT
Description : Draw the construction of magnetron and describe it’s working.
Last Answer : Working/Operation: 1. Now assume RF oscillations are initiated due to some noise transient within the magnetron, the oscillations will be sustained by device operation. 2. Self- ... these favored electrons imparts enough energy to the RF oscillations so that they are sustained.
Description : With neat cross sectional constructional details,write effect of magnetic and electric field in magnetron
Last Answer : 1)When magnetic & electric fields act simultaneously upon the electron,its path can have any of a number of shapes dictated by the resistive strengths of the mutually perpendicular electric & ... happens because in practice the applied magnetic field is greatly in excess of the cutoff field.
Description : Has anyone gotten through life so far without any teeth cavities?
Last Answer : My first appeared in my middle 60s. The second is with me now.
Description : Functions of the nasal cavities. -Biology
Description : Can cavities kill you?
Last Answer : Not really, Though the bacteria found in such cavities canaffect your cardiovascular health (heart and arteries, veins),plaque buildup is also not good for you.
Description : Hello, I'm 15 and I have had a strange condition in my throat and nose all my life, I think my gore is constantly congested and my nasal cavities are narrow. I've never dealt with it in any way, ... through my nose, Please give me a professional or even PS .... I've been to almond surgery before.
Last Answer : See a doctor.
Description : Assertion` :` In open circulatory system blood is pumped by heart passes throgh large vessels into open spaces or body cavities called sinuses. Reason
Last Answer : Assertion` :` In open circulatory system blood is pumped by heart passes throgh large vessels into open ... D. If both Assertion & Reason are false.