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 : 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 : Without strapping, the resonant cavities of a hole-and-slot anode are connected in what manner?
Last Answer : Series.
Description : Jam nut is a locking device in which (A) A smaller nut is tightened against main nut creating friction at the contacting surface (B) A split pin is passed through diametrically opposite slots in nut and ... parts of nut separated by slot (D) An elastic piece is tightened in the nut by a setscrew
Last Answer : (A) A smaller nut is tightened against main nut creating friction at the contacting surface
Description : Castle nut is a locking device in which (A) A smaller nut is tightened against main nut creating friction at the contacting surface (B) A split pin is passed through diametrically opposite slots in nut and ... of nut separated by slot (D) An elastic piece is tightened in the nut by a setscrew
Last Answer : (B) A split pin is passed through diametrically opposite slots in nut and a hole in bolt and the two ends of split pin are separated and bent back on nut
Description : A magnetron will produce oscillations when the electrons follow what type of path?
Last Answer : Circular.
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 : 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 : 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 : A cylindrical copper block with resonant cavities around the circumference is used as what component of a magnetron?
Last Answer : Anode or plate
Description : What serves as a grid in a magnetron?
Last Answer : A magnetic field.
Description : What type of tuning does the receiver use?
Last Answer : Digital
Description : What is the name of the device that provides an increase in current, voltage, or power of a signal without appreciably altering the original signal?
Last Answer : Amplifier.
Description : What is the primary measurement application for tuning forks?
Last Answer : They are used to monitor fixed motor speeds.
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 : What limits the tuning range around the center frequency of a reflex klystron in a particular mode of operation?
Last Answer : The half-power points of the mode.
Description : What are the tuning modes for the coupler group discussed?
Last Answer : Automatic, semiautomatic, and manual.
Description : What is the polarization of the energy radiated by a vertical slot?
Last Answer : Horizontal.
Description : What can emit an umbra on the earth, provide phosphorescence for all it's creatures. All while altering the visual surface of itself within phases? -Riddles
Last Answer : The moon.
Description : The β-lactam antibiotic(s) that prolong(s) bleeding time by altering surface receptors on platelets is/are: A. Carbenicillin B. Piperacillin C. Cefotaxime D. Both `A’ and `B’ are correct
Last Answer : A. Carbenicillin
Description : A two-cavity klystron without a feedback path will operate as what type of circuit?
Description : A circular cavity ground out of bedrock by running water is called a: w) cave x) pothole y) sinkhole z) kettle hole
Last Answer : ANSWER: X -- POTHOLE
Description : What type of lens decelerates a portion of a spherical wavefront
Last Answer : Delay lens
Description : The darkest portion of the shadow cast during an eclipse is– (1) Corona (2) Umbra (3) Penumbra (4) Black hole
Last Answer : (2) Umbra Explanation: The umbra (Latin for "shadow") is the innermost and darkest part of a shadow, where the light source is completely blocked by the occluding body. An observer in the umbra experiences a total eclipse.
Description : The darkest portion of the shadow cast during an eclipse is (1) Corona (2) Umbra (3) Penumbra (4) Black hole
Last Answer : Umbra
Description : Energy can be inserted or removed from a cavity by what three methods?
Last Answer : Probes, loops, and slots.
Description : What two variables determine the primary frequency of a resonant cavity?
Last Answer : Size and shape of the cavity.
Description : A cavity that vibrates at its natural frequency produces a louder sound than at other frequencies. What term is used to describe this phenomenon?
Last Answer : Resonance.
Description : Why is the tunnel diode loosely coupled to the cavity in a tunnel-diode oscillator?
Last Answer : To increase the stability.
Description : What element of the reflex klystron replaces the output cavity of a normal klystron?
Last Answer : The reflector or repeller.
Description : Which cavity of a three-cavity klystron causes most of the velocity modulation?
Last Answer : The middle cavity.
Description : How is the electron beam of a three-cavity klystron accelerated toward the drift tube?
Last Answer : A large negative pulse is applied to the cathode.
Description : What can be added to the basic two-cavity klystron to increase the amount of velocity modulation and the power output?
Last Answer : Intermediate cavities between the input and output cavities.
Description : The two-cavity klystron uses what cavity as an output cavity?
Last Answer : The catcher cavity.
Description : What determines the placement of the catcher cavity?
Last Answer : The frequency period of the buncher grid signal
Description : What type of motion occurs when an object spins around an axis without altering its linear position linear motion rotational motion translational motion vibrational motion?
Last Answer : Need answer
Description : Altering the amino acid profile in total parenteral nutrition solutions can be of benefit in certain conditions. Which of the following conditions are associated with a benefit by supplementation with the ... c. Short gut syndrome and glutamine d. Chronic renal failure and essential amino acids
Last Answer : Answer: a, c In a number of conditions, altering the amino acid profile of the total parenteral nutrition solution can be of benefit. TPN with amino acids of high biologic value ... Glutamine-enriched TPN partially attenuates villous atrophy and may be useful in treatment of short gut syndrome
Description : Which portion of a sine-wave input is retained in the output of a series-negative limiter?
Last Answer : Positive.