A large negative voltage is applied to the plate of a diode, and a largewhat tube parameter has been exceeded?

1 Answer

Answer :

Peak Inverse Voltage (PIV).

Related questions

Description : An ac voltage is applied across a diode. The tube will conduct when

Last Answer : Positive.

Description : The plate voltage of a tube will vary 126 volts when a 3-volt ac signal is applied to the control grid. What is the gain of this tube?

Last Answer : 42.

Description : Which protocol carries messages such as destination Unreachable, Time Exceeded, Parameter Problem, Source Quench, Redirect, Echo, Echo Reply, Timestamp, Information Request, Information Reply, Address Request, and Address Reply? * ICMP * UDP * TCP * TFTP

Last Answer : Correct answer: A ICMP (Internet Control Message Protocol) is a network layer internet protocol described in RFC # 792. ICMP reports IP packet information such as destination Unreachable, Time ... Echo Reply, Timestamp, Information Request, Information Reply, Address Request, and Address Reply.

Description : A tube has a transconductance of 800 mhos and a load resistor of 50 kohms. When control grid voltage varies by 6 volts, the plate voltage will vary by what amount?

Last Answer : 240 volts.

Description : If the mu of a tube is 85 and the signal at the control grid is 4 volts ac, the plate voltage will vary by what amount?

Last Answer : 340 volts.

Description : Cathode rays in a discharge tube are made up of electrons emitted from the plate that is connected to the negative terminal of the DC voltage source.

Last Answer : Cathode rays in a discharge tube are made up of electrons emitted from the plate that is connected to the negative terminal of the DC voltage source.

Description : . In a common anode, seven-segment LED display, an individual LED will light if a negative voltage is applied to what element?

Last Answer : The cathode.

Description : After using a tape that was stored in an area where temperatures exceeded 130º F you notice pieces of oxide sticking to the recorder's tape-transport mechanism, to its magnetic heads, and onto the tape. What is the probable cause of these symptoms?

Last Answer : Oxide shedding. At temperatures above 130º F, oxide coating becomes soft and sheds.

Description : What six types of environmental damage can occur to tapes in storage when the ideal temperature and humidity ranges are exceeded?

Last Answer : Tape deformation, oxide shedding, head-to-tape sticking, layer to-layer sticking, dirt build-up, and excessive tape and head wear.

Description : What causes dc bias energy to be absorbed by avalanche electrons and given up to the microwave field applied to an avalanche transit-time diode?

Last Answer : The negative-resistance property.

Description : When would the negative differential limits be reached/exceeded? a. Rapid descent when AC descends below cabin altitude b. During ground pressure testing c. Rapid ascent when aircraft climbs d. When changing to manual operation

Last Answer : a. Rapid descent when AC descends below cabin altitude

Description : When would the negative differential limits be reached/exceeded? a. Rapid descent when AC descends below cabin altitude b. During ground pressure testing c. Rapid ascent when aircraft climbs d. When changing to manual operation

Last Answer : a. Rapid descent when AC descends below cabin altitude

Description : How does the current-diode detector differ from the voltage-diode detector?

Last Answer : The current-diode detector is in parallel with the input and load.

Description : The -------can conduct current in either direction and is turned-on when the breakover voltage is exceeded  A) SCR B) Diac  C) SCS D) Traic

Last Answer : The diac  can conduct current in either direction and is turned-on when the breakover voltage is exceeded.

Description : In the illustration, the diode between terminals 16 and 17 is to _________. EL-0046 A. act as a short circuit for the sensing coil when CEMF is applied B. insure that the voltage across the coil does not exceed 9 volts C. improve response time D. act as a filter to prevent hunting

Last Answer : Answer: A

Description : A constant potential difference is applied across the plates of a parallel-plate capacitor. Neglecting any edge effects, the electric field inside the capacitor is: w) constant x) varying as one over r squared y) decreasing as one moves from the positive to the negative plate z) zero

Last Answer : ANSWER: W -- CONSTANT

Description : During the manufacture of a point-contact diode, what is the purpose of passing a relatively large current from the catwhisker to the silicon crystal?

Last Answer : . To form a small region of p-type material

Description : Does a rectifier tube conduct on the positive or negative alternation of the input signal?

Last Answer : Positive.

Description : How does transit time affect the relationship of the grid voltage and the plate current at high frequencies?

Last Answer : Transit time causes the grid voltage and plate current to be out of phase

Description : What is the relationship between the polarity of the voltage applied to the PNP transistor and that applied to the NPN transistor?

Last Answer : The polarity of voltage applied to the PNP transistor is opposite of that applied to the NPN

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 : According to Ohm’s law, what happens to circuit current if the applied voltage (a) increases, (b) decreases?

Last Answer : (a) Current increases (b) Current decreases

Description : A high voltage applied to a gas discharge tube containing neon gas at very low pressure causes a current to flow through the tube. Which one of the following are the particles that flow towards the ... Are they w) electrons x) protons y) negatively charged neon ions z) positively charged neon ions

Last Answer : ANSWER: Z -- POSITIVELY CHARGED NEON IONS

Description : When a large signal and a small signal are applied to a lin log amplifier at the same time, what is the effect on the small signal?

Last Answer : Amplification is reduced.

Description : Does coupling loss from refractive index profile difference result when the receiving fiber has a larger profile parameter

Last Answer : Fiber alignment.

Description : The profile parameter (α) determines the shape of the multimode graded-index core's refractive index profile. As the value of the aincreases, how does the core's profile change?

Last Answer : From a triangular shape to step.

Description : Which performance parameter is the minimum amount of optical power required to achieve a specific bit-error rate (BER) in digital systems or a given signal-to-noise ratio (SNR) in analog systems?

Last Answer : Receiver sensitivity.

Description : The value of the normalized frequency parameter (V) relates the core size with mode propagation. When single mode fibers propagate only the fundamental mode, what is the value of V?

Last Answer : V≤2.405.

Description : If a parameter is used in a query without being previously defined, what diff. exist betw. report 2.0 and 2.5 when the query is applied?

Last Answer : While both reports 2.0 and 2.5 create the parameter, report 2.5 gives a message that a bind parameter has been created.

Description : What type of uhf tube was developed to handle large amounts of power?

Last Answer : Planar

Description : If a voltage (positive or negative) is measured on the "1" output of a flip-flop, what state is it in?

Last Answer : SET state.

Description : What would be the output of a negative clamper with a bias potential of −5 volts and an input voltage swing from +50 to −50 volts?

Last Answer : -5 volts.

Description : Why is the negative-resistance magnetron often operated with reduced filament voltage?

Last Answer : To reduce the effects of filament bombardment.

Description : If the load requirement consists of both positive and negative voltages, what technique is used in the voltage divider to supply the loads from a single voltage source?

Last Answer : The ground (reference point) is placed in the proper point in the voltage divider so that positive and negative voltages are supplied

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 : What is the relative length of the time constant for the diode capacitor combination in a damper (long or short)?

Last Answer : Short time constant.

Description : What is the condition of the diode in a series limiter when an output is developed? In a parallel limiter?

Last Answer : Conducting, cutoff.

Description : In the tunnel diode, the tunneling current is at what level when the forbidden gap of the N-type material is at the same energy level as the empty states of the P-type material?

Last Answer : Minimum.

Description : Why is electron flow with the arrow in the symbol of a Zener diode instead of against the arrow as it is in a normal diode?

Last Answer : Because Zener diodes are operated in the reverse bias mode.

Description : During avalanche effect breakdown, what limits current flow through the diode?

Last Answer : an external current-limiting resistor

Description : What is the doping level of an avalanche effect diode when compared to the doping level of a Zener-effect diode?

Last Answer : The doping level of an avalanche effect diode is lower.

Description : What is the name of the simplest type of rectifier which uses one diode?

Last Answer : The half-wave rectifier.

Description : When checking a diode with an ohmmeter, what is indicated by two high resistance measurements?

Last Answer : The diode is open or has a high-forward resistance.

Description : What is the greatest threat to a diode?

Last Answer : Heat.

Description : What type of diode has orange, blue, and gray bands?

Last Answer : 1N368.

Description : What is meant by diode ratings?

Last Answer : They are the limiting values of operating conditions outside which operations could cause diode damage.

Description : What is used to show how diode parameters vary over a full operating range?

Last Answer : A characteristic curve.

Description : What type of bias makes a diode act as a closed switch?

Last Answer : Forward bias.

Description : What type of PN diode is formed by using a fine metal wire and a section of N-type semiconductor material?

Last Answer : Point-contact.

Description : In reference to the schematic symbol for a diode, do electrons flow toward or away from the arrow?

Last Answer : Toward the arrow.