Description : A circuit has a source voltage of 100 volts and two 50-ohm resistors connected in series. If the reference point for this circuit is placed between the two resistors, what would be the voltage at the reference point?
Last Answer : 50 volts.
Description : A final amplifier of a radio transmitter draws 250 mA of plate current when the plate supply voltage is 1400 volts. If the plate circuit efficiency is 80% and the transmitter is connected to an antenna having a feed impedance of 70 ohms, ... at the feed-point? A. 4.0 A B. 2.2 A C. 1.25 A D. 2.0 A
Last Answer : D. 2.0 A
Description : If an ac voltmeter is connected between the S2 and S3 windings on a TX, at what two rotor positions should the voltmeter read maximum voltage?
Last Answer : . 150º and 330º
Description : In a full-wave voltage doubler, are the capacitors connected in series or in parallel with the output load?
Last Answer : In parallel.
Description : A shunt-type voltage regulator is connected in serial/parallel (which one) with the load resistance.
Description : A shunt type voltage regulator is connected in series/parallel with the load resistance.
Last Answer : Parallel
Description : In what manner are voltage-measuring instruments connected to the circuit to be measured?
Description : What is the reference point for alignment of all synchro units?
Last Answer : The voltmeter method.
Description : A series circuit consists of two resistors in series. R1 = 25 ohms and R2 = 30 ohms. The circuit current is 6 amps. What is the (a) source voltage, (b) voltage dropped by each resistor, (c) total power, and (d) power used by each resistor?
Last Answer : (a) 330 volts. (b) E1 = 150 volts. E2 = 180 volts. (c) 1.98 kilowatts. (d) P1 = 900 watts. P2 = 1.08 kilowatts component but in a parallel circuit total current divides among the available paths.
Description : An accidental path of low resistance which passes an abnormal amount of current is known as a/an _____________. A. polarized ground B. short circuit C. ground reference point D. open circuit
Last Answer : Answer: B
Description : An accidental path of low resistance, allowing passage of abnormal amount of current is known as a/an ____________. A. open circuit B. short circuit C. polarized ground D. ground reference point
Description : What minimum/maximum voltage level can be attained in the pulse generator section by adjusting the LEVEL control?
Last Answer : 0 to 5 volts.
Description : A load with an impedance of 440 ohms is connected across the secondary of the transformer illustrated. If the input voltage is 110 VAC and the step-up ratio is 10 to 1, what will be the primary current? EL-0055 A. 2.5 amps B. 25 amps C. 250 amps D. current cannot be determined with information given
Description : A load with an impedance of 440 ohms is connected across the secondary of the device illustrated. If the input voltage is 110 VAC and the step-up ratio is 10 to 1, what will be the primary current? EL-0055 A. 2.5 amps B. 25 amps C. 250 amps D. current cannot be determined with information given
Description : If the source voltage for the voltage divider in question 50 supplies 150 volts, what is the total current through the voltage divider?
Last Answer : 495 mA.
Description : If the load in question 50 requires a voltage of +90 V, what should be the value of the bleeder resistor?
Last Answer : 2 kΩ
Description : If the current was increased to 4 amps, what would be the voltage drop across each resistor in the circuit described in question 17?
Last Answer : E1 = 80 volts. E2 = 240 volts. E3 = 320 volts
Description : What is the voltage dropped by each resistor of the circuit described in question 17?
Last Answer : E1 = 60 volts. E2 = 180 volts. E3 = 240 volts.
Description : In reference to the schematic symbol for a diode, do electrons flow toward or away from the arrow?
Last Answer : Toward the arrow.
Description : What transmission method uses a stable cw reference oscillator, which is locked in phase with the transmitter frequency?
Last Answer : Pulse-Doppler.
Description : In reference to dB meters, 0 dBm represents 1 milliwatt into what value of load?
Last Answer : 600-ohm load.
Description : On DIP and flat-pack ICs viewed from the top, pin 1 is located on which side of the reference mark?
Last Answer : Left.
Description : At what point on an open-circuited rf line do voltage peaks occur?
Last Answer : At 1/2 wavelength from the end and at every 1/2 wavelength along the line
Description : The illustrated motor controller _________. EL-0023 A. is a low voltage release controller because the motor will stop when voltage falls below a certain value and automaticly start when normal voltage ... with a generator or transformer bank that is 'wye' wound with T2 connected to the neutral
Description : The difference between signal strength at a given point and a reference level is________. A. power B. dBm C. level D. ratio
Last Answer : C. level
Description : A relatively fixed point of known elevation above datum, is called (A) Bench mark (B) Datum point (C) Reduced level (D) Reference point
Last Answer : (A) Bench mark
Description : An electric pole is 6.5 m high from the ground level. Its effective length for design purposes will be (a) 6.5 m (b) 3.25 m (c) 13.0 m (d) 12.0 m
Last Answer : 6.5M
Description : In the illustration, the small battery and Rb are in the circuit to apply ________. EL-0022 A. forward bias to the emitter-base B. reverse bias to the emitter-base C. a 'reference charge' on the input capacitor D. a buffer between the input ground and the emitter ground
Last Answer : Answer: A
Description : The potentiometers shown in the illustration are supplied with both (+) and (-) voltages as well as a reference to ground ________________. EL-0095 A. so there is always a spare power ... , the other for relay operation and the potentiometers are in positions where they can be accidentally touched
Last Answer : Answer: C
Description : With reference to agriculture, what are Smother Crops ? a Crops that are grown for grazing of harvesting for immediate or future feeding of livestock. b Crops grown to conserve the soil ... season when main crop fails. e Crops whose culture practices allow the infestation of weeds intensively.
Last Answer : e Crops whose culture practices allow the infestation of weeds intensively.
Description : Describe the concept of virtual ground with reference to op-Amp.
Last Answer : Virtual ground concept:-In circuit point A is virtual ground. Figure shows inverting amplifier using op-amp. In this circuit non-inverting terminal is connected to the actual ground. Due to ... zero potential without actually grounding is known as virtual ground concept. Circuit diagram:
Description : If the unity-gain point of the operational amplifier used in question 24 is 500 kilohertz, what is the bandwidth of the circuit?
Last Answer : 50 kilohertz (Gain = 10; Gain-Bandwidth Product = 500,000) 500,000(Hz)
Description : Is an ammeter connected in series or in parallel with the circuit under test?
Last Answer : . In series.
Description : How are synchro capacitors connected in a circuit?
Last Answer : They are delta-connected across the stator windings.
Description : In a TDR system connected for addition in what direction will the TDR rotor field turn when the TX rotor to which it is connected turns counterclockwise?
Last Answer : Clockwise.
Description : What leads in a simple synchro system are connected to the ac power line?
Last Answer : The rotor leads.
Description : Which of the two main types of rotors can have either a single winding or three Y-connected windings?
Last Answer : The drum or wound rotor.
Description : In order to reverse bias in a PN junction, what terminal of a battery is connected to the P material?
Last Answer : Negative.
Description : The IF amplifiers are connected in what amplifier configuration?
Last Answer : Cascade.
Description : In a series-connected duplexer, what tube (tr or atr), if any, fires during the receive cycle?
Last Answer : Neither fires.
Description : What term is used for the end of the transmission line that is connected to an antenna?
Last Answer : Output end, receiving end, load end and sink.
Description : What term is used for the end of the transmission line that is connected to a transmitter?
Last Answer : Input end, generator end, transmitter end, sending end, and source.
Description : For a diode to act as a rectifier, should it be connected in series or parallel with the load?
Last Answer : Series.
Description : When the axes of two connected fibers are no longer in parallel, the two connected fibers are in what kind of misalignment?
Last Answer : Angular misalignment.
Description : Without strapping, the resonant cavities of a hole-and-slot anode are connected in what manner?
Description : How are the input and output directional couplers in a twt connected to the helix?
Last Answer : The directional couplers are not physically connected to the helix.
Description : What type of antenna has all elements connected to the same energy source?
Last Answer : Driven Array.
Description : Three resistors connected in parallel have values of 12 kΩ, 20kΩ, and 30kΩ. What is the equivalent resistance? A37. 6kΩ Q38. Two resistors connected in parallel have values of 10 kΩ and 30kΩ. What is eht equivalent resistance?
Last Answer : 7.5kΩ
Description : Four equal resistors are connected in parallel, each resistor has an ohmic value of 100 ohms, what is the equivalent resistance?
Last Answer : 25 ohms
Description : How are circuits protections devices connected to the circuit they are intended to protect and why are they connected in this way?
Last Answer : In series, so total current will be stopped when the device opens.