Description : Why the control grid of a triode amplifier is negatively biased?
Last Answer : To prevent them from drawing grid current.
Description : What component is used in a triode amplifier to convert variation in
Last Answer : A plate load resistor RL
Description : In the power amplifier shown in figure 2-10, what two signals are mixed to produce the output signal?
Last Answer : Local oscillator and coherent oscillator.
Description : Approximately how many milliamperes of current flow through a circuit with a 40 V source and 6.8 k ohms of resistance? A.27.2 mA B.59 mA C.5.9 mA D.590 mA
Last Answer : Approximately how many milliamperes of current flow through a circuit with a 40 V source and 6.8 k ohms of resistance? A.27.2 mA B.59 mA C.5.9 mA D.590 mA
Description : What effect does transit time have on a conventional triode operated at uhf frequencies?
Last Answer : It causes the control grid to short to the cathode
Description : What is the primary difference between a diode and a triode?
Last Answer : The triode contains a third element called the control rid.
Description : A triac thyristor functions as a control device and is basically ________________. A. two NPN transistors in parallel with a common base lead B. a diode in series with a temperature sensitive capacitor C. two ... -back SCR's with a common gate lead D. a triode tube with an extra heavy grid element
Last Answer : Answer: C
Description : A milliammeter, with a full scale deflection reading of 100 milliamps, is known to have an accuracy of + or - 2%. A meter reading of 10 milliamps would indicate a line current of between _____________. A. 9.8 ... 9.8 and 10.2 milliamperes C. 8.0 and 12.0 milliamperes D. 8.0 and 10.0 milliamperes
Last Answer : Answer: B
Description : What happens to the path for current when S1 is open as shown in figure 3-2(A)?
Last Answer : The path for current is incomplete; or, there is no path for current with S1 open.
Description : What is a Ebb current and when does it happen?
Last Answer : What is the answer ?
Description : Internal communication within institutions is done through (A) LAN (B) WAN (C) EBB (D) MMS
Last Answer : (A) LAN
Description : Reaction between X and Y forms compound Z. X loses electron and Y gains electron. Which of the following properties is not shown by Z? A) Has high melting point B) Has low melting point C) Conducts electricity in molten state D) Occurs as solid
Last Answer : B) Has low melting point
Description : Figure 'A' of the diagram shown in the illustration represents a ______________. EL-0092 A. differential transformer B. saturable reactor C. synchro system D. magnetic amplifier
Description : Figure 'B' shown in the illustration represents a/an ____________. EL-0091 A. magnetic amplifier B. Scott-T transformer C. saturable-core reactor D. oil-filled toroid
Last Answer : Answer: A
Description : Figure 'A' shown in the illustration represents a/an _______________. EL-0091 A. magnetic amplifier B. Scott-T transformer C. saturable-core reactor D. oil-filled toroid
Description : Fourteen milliamperes can be expressed as? A.14 MA B.14 μA C.14 kA D.14 mA
Last Answer : Fourteen milliamperes can be expressed as? A.14 MA B.14 μA C.14 kA D.14 mA
Description : In a circuit such as that shown in figure 3-15, if R1 has a value of 100 ohms and R2 has a value of 1 kilohm and the input signal is at a value of + 5 millivolts, what is the value of the output signal?
Last Answer : 50 millivolts.
Description : A tape pack has gaps in the tape winding as shown in figure 2-5. What causes this condition?
Last Answer : Tape is loosely wound on reel.
Description : The three time estimates for the activities of the network shown in the given figure are shown above their arrows. The earliest expected time for the event 4, is (A) 19 (B) 14 (C) 24 (D) None of these
Last Answer : (A) 19
Description : The collector-injection modulator is similar to what type of tube modulator?
Last Answer : Plate modulator.
Description : In a circuit such as that shown in figure 3-16, if R1 has a value of 50 ohms and R2 has a value of 250 ohms and the input signal has a value of +10 millivolts, what is the value of the output signal?
Last Answer : 60 millivolts.
Description : If the fuse shown on the schematic (figure 3-10) opens, what lights will operate?
Last Answer : Only the brake lights.
Description : How is amplification achieved in the circuit shown in figure 2-43?
Last Answer : By varying the amount of capacitance in the circuit
Description : A tape pack is buckled and deformed as shown in figure 2- 4. What are three possible causes for this condition?
Last Answer : a. Reel has a distorted hub, b. tape wound over small particle deposited on hub, and c. tape wound on reel with tension increasing toward end of winding.
Description : What effect does the internal resistance have on the rest of the circuit shown in figure 3-60?
Last Answer : Because of the 2-volt drop across the internal resistance, only 48 volts is available for the rest of the circuit.
Description : What is the total resistance of the circuit shown in figure 3- 60?
Last Answer : 25Ω
Description : What is the total resistance of the circuit shown in figure 3- 59? (Hint: Redraw the circuit to simplify and then use equivalent resistances to compute for RT.)
Last Answer : 4Ω
Description : What is the name given to the "picture" of a circuit such as the one shown in figure 3-2?
Last Answer : A schematic diagram.
Description : . If the power distribution system shown in figure 2-22 uses selective tripping, what is the time delay rating for each of the circuit breakers shown?
Last Answer : CB1-long time delay; CB2, CB3-short time delay; CB4 through
Description : Which connector should you use to connect the (a) power source and (b) load to the fuseholder shown in figure 2-12(A)?
Last Answer : a. Center connector b. Outside connector
Description : What type of frequency meter is shown and what is the value indicated for each meter in figure 1-52?
Last Answer : A) Vibrating-reed, 60Hz. (B) Moving-disk, 58 Hz.
Description : What type of meter is shown and what is the value of the quantity being measured for each meter in figure 1-51?
Last Answer : (A) Megger (megohmmeter), infinity; (B) Wattmeter, 9.5 kilowatts (9,500 watts). (C) Watt-hour meter, 2.693 megawatt-hours 2,693 kilowatt-hours) (2,693,000 watt-hours).
Description : What meter reading is shown on each multimeter in each part of figure 1-50?
Last Answer : (A) 410 mA dc; (B) 3.9 mA ac; (C) -22 V dc; (D) 600 V ac; (E) 1.4 V ac; (F) 1.9 kohms
Description : What is the quantity shown on the watt-hour meter in figure 1-46?
Last Answer : 5.945 megawatt-hours, or 5,945 kilowatt-hours, or 5,945, 000 watt-hours.
Description : I come and go wherever you are in the world. I ebb and flow with colors and sound for which anyone can hear. I come and go with each person here, yet I am unique to everyone. I can grow with one, ... another. I age with the person I am with and live in the treetops in everybody. What am I? -Riddles
Last Answer : Imagination.
Description : What is the opposite of ebb ?
Last Answer : Inverse tide of ebb ৷
Last Answer : The tide is not flowing in Gomti river.
Description : tidal How much? Time After Ebb Creation Is it
Last Answer : approx 3 The bell 13 Minutes After Ebb Creation Is.
Description : If current gain is required from an rf amplifier, what type of component should be used as an output coupling element?
Last Answer : A step-down transformer.
Description : What would the source voltage (ES) in figure 3-39 be if the current through R2 were 2 milliamps?
Last Answer : 60 volts.
Description : Who invented the triode ?
Last Answer : Scientist The Forest Triode discovers the triode.
Description : What is a vacuum triode ? What is a vacuum triode ?
Last Answer : A vacuum tube with three electrodes is called a triode.
Description : Which one among the following components can not be developed within an "integrated circuit"? (1) Diode (2) Triode (3) Transformer (4) Transistor
Last Answer : (3) Transformer Explanation: Some components like transformers and inductors cannot be integrated into an IC except for very specialized high frequency applications. They have to be ... circuit boards as separate components and cannot be integrated into semiconductor based integrated circuits.
Description : Which one among the following components can not be developed within an “integrated circuit”? (1) Diode (2) Triode (3) Transformer (4) Transistor
Last Answer : Transformer
Last Answer : The voltage gain of triode depends on plate voltage.
Description : Prepare operation process sheet and decide sequence of operation for the component shown in Figure No. 1. Assume suitable material and cutting conditions.
Last Answer : Operation Sheet with correct sequence of operations for the above given component by assuming suitable material and cutting conditions is as shown in below table;
Description : The substance which conducts current in the solid state is – (1) diamond (2) graphite (3) iodine (4) sodium chloride
Last Answer : (2) graphite Explanation: The structure of graphite is unlike most other network substances. It is formed in 'sheets' of carbon atoms, each of which is bonded to only three others. The ... electric charges. Unlike diamond (another carbon allotrope), graphite is an electrical conductor, a. semimetal.
Description : The substance which conducts current in the solid state is (1) diamond (2) graphite (3) iodine (4) sodium chloride
Last Answer : graphite
Description : A current l flows through a closed loop as shown in figure .The magnetic field at the centre O is
Last Answer : A current l flows through a closed loop as shown in figure .The magnetic field at the centre O is A. ... )l)/(2piR)(theta+sintheta)` D. None of these
Description : As the switch `S` is closed in the circuit shown in figure, current passed through it is.
Last Answer : As the switch `S` is closed in the circuit shown in figure, current passed through it is. A. `4.5A` B. `6.0A` C. `3.0A` D. zero