2024-04-27 02:12
Problem Statement: Principles of Communications Noise Problem Solving An amplifier operating over a 2 MHz bandwidth has an 80 ohms input resistance. It is operating at 27 degrees Celsius, ha… Read More
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2024-04-26 04:46
Problem Statement: Principles of Communications Noise Problem Solving A receiver connected to an antenna whose resistance is 50 ohms has an equivalent noise resistance of 30 ohms. What is th… Read More
2024-04-26 04:18
Problem Statement: Principles of Communications Noise Problem Solving The equivalent noise temperature of the amplifier is 25K. What is the noise figure? a. 1.086 b. 1.200 c. 1.350 d. 1.025… Read More
2024-04-26 03:32
Problem Statement: Principles of Communications Noise Problem Solving Convert noise factor of 4.02 to equivalent noise temperature. Use 300K for environmental temperature a. 876K b. 900K c… Read More
2024-04-25 13:53
Problem Statement: Principles of Communications Noise Problem Solving The front-end of a television receiver, having a bandwidth of 7 Mhz, and operating at a temperature of 27˚C , consi… Read More
2024-04-25 09:49
Problem Statement: Principles of Communications Noise Problem Solving The noise output of a resistor is amplified by a noiseless amplifier having a gain of 60 and a bandwidth of 20 kHz. A me… Read More
2024-04-25 09:31
Problem Statement: Principles of Communications Noise Problem Solving An amplifier operating over the frequency range from 450 kHz to 460 kHz has a 100kΩ input resistor. (a) What is th… Read More
2024-04-25 09:12
Problem Statement: Principles of Communications Noise Problem Solving An amplifier operating over the frequency range of 455 to 460 kHz has a 200 kΩ input resistor. What is the RMS noi… Read More
2024-04-25 08:40
Problem Statement: Principles of Communications Noise Problem Solving You are measuring noise at a -6 dB level point, using the Lenkurt 601A, F1A weighting network, and a flat meter. The met… Read More
2024-04-24 07:48
This is the Multiple Choice Questions in ECE Laws, Contracts, Ethics, Standards & Safety Part 16 as one of the General Engineering and Applied Sciences (GEAS) topics. In Preparation for… Read More
2024-04-22 06:11
This is the Multiple Choice Questions in ECE Laws, Contracts, Ethics, Standards & Safety Part 14 as one of the General Engineering and Applied Sciences (GEAS) topics. In Preparation for… Read More
2024-04-22 04:35
This is the Multiple Choice Questions in ECE Laws, Contracts, Ethics, Standards & Safety Part 13 as one of the General Engineering and Applied Sciences (GEAS) topics. In Preparation for… Read More
2024-04-20 07:15
This is the Multiple Choice Questions Part 12 of the Series in Transmission Fundamentals as one of the Communications Engineering topics. In Preparation for the ECE Board Exam, make sure to… Read More
2024-04-20 03:25
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A circuit draws a current of (3 – j8) A from a source of (100 + j37) V. F… Read More
2024-04-20 03:08
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A coil with a 15 Ω resistance is connected in series with a capacitor. At… Read More
2024-04-19 07:49
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving The input of an a.c. circuit having p.f. of 0.8 lagging is 20 kVA. The power dr… Read More
2024-04-19 07:30
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving The input of an A.C. circuit having power factor of 0.8 lagging is 40 kVA. The… Read More
2024-04-19 07:04
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving Two coils A and B known to have the same resistance are connecte… Read More
2024-04-19 06:34
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving An impedance coil has a resistance and inductance of 20 ohms and 0.05 H respect… Read More
2024-04-19 03:08
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A coil having a resistance of 25 Ω and an inductance of 150 mH is connect… Read More
2024-04-19 02:49
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A 50 Ω resistance is connected in series with a coil having 25 Ω re… Read More
2024-04-19 01:30
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A coil of a 50-ohm resistance and of 150 mH… Read More
2024-04-18 10:35
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A series RL circuit has L = 0.02 H and an impedance of 17.85 Ω. When a si… Read More
2024-04-18 10:21
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A coil has a resistance of 6 ohms and an inductance of 0.02 H. When a noninduct… Read More
2024-04-18 09:58
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A resistor of 50 ohms and an impedance of 100 + j50 ohms are connected in paral… Read More
2024-04-18 05:04
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A circuit consists of XL = j5 ohms, XC = -j5 &hell…Read More
2024-04-18 04:41
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving An ac source of 200 Vrms supplies active power of 600 W and reactive power… Read More
2024-04-18 04:00
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving The impedances of two parallel branches of a circuit are (10 + j10) and (10 &nd&hell…Read More
2024-04-17 10:16
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving An R-L circuit has Z = (6 + j8) ohm. Its susceptance is ______ siemens. A. &hell…Read More
2024-04-17 09:54
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving Two parallel branches have admittances 0.3 + j0.4 and 0.2 – j0.25&nb&hell…Read More
2024-04-17 09:38
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A resistance of 20 ohms and an unknown capacitance are connected in p… Read More
2024-04-17 05:06
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving Two impedances Z1 = 3 + j4 and Z2 = 5 – j8.66 ohms respectively… Read More
2024-04-17 04:50
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving An inductive reactance of 8 ohms is connected in parallel with a capacitiv… Read More
2024-04-17 04:33
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving An impedance equal to 4.44∠60° Ω is connected across a 220 V sour… Read More
2024-04-17 04:13
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A coil of 10 Ω resistance and 0.1 H inductance is connected in parallel w… Read More
2024-04-17 03:33
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A capacitor is placed in parallel with two inductive loads, one of 20 A at 30&d&hell…Read More
2024-04-16 08:17
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A small single-phase, 240 V induction motor is tested in parallel with 160 &hell…Read More
2024-04-16 07:41
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A fluorescent lamp and its inductive ballast draw a 1.0 A c… Read More
2024-04-16 07:08
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A parallel circuit consists of a resistor having a conductance of 4 mhos, an in… Read More
2024-04-16 05:24
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving Two impedances Za = 4 – j7 Ω and Zb = 6+ j 9 Ω are connected… Read More
2024-04-16 04:34
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A 30-Ω resistor, a 15-Ω inductive reactance, and a 12-Ω capac… Read More
2024-04-16 04:15
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving Given three impedances: Z1 = 10 + j0 ohms, Z2 = 3 + j4 ohms and Z3 = 8 –… Read More
2024-04-15 06:18
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A non-inductive resistor R is connected in parallel with an inductive reactance… Read More
2024-04-15 05:43
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A 5-ohm resistor is connected in parallel with a 10-ohm inductive reactance. Th… Read More
2024-04-15 04:52
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A coil of 50-ohm resistance and of 150-mH inductance is connected in paral… Read More
2024-04-15 04:19
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving Two impedances A and B are connected in parallel across a 120 V ac su… Read More
2024-04-15 02:31
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A 1-hp, 220 V, 60 Hz capacitor-start motor has main and auxiliary winding imped… Read More
2024-04-15 02:12
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A sinusoidal current source, 10 cos 1000t, is in parallel both with a 20-ohm re… Read More
2024-04-15 01:29
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A resistance of 5 ohms is connected in series with a capacitor of 442.1 μF… Read More
2024-04-14 10:17
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A 250 V, 30 Hz generator supplies power to a parallel circuit consisting of a 2… Read More
2024-04-14 09:28
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving Three loads, units A, B and C are connected in parallel and take currents that… Read More
2024-04-14 09:06
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A capacitor of 3.18 microfarads is connected in parallel with a resistance of 2… Read More
2024-04-14 08:12
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A capacitor, an electric resistance heater, and impedance are connected in… Read More
2024-04-13 07:20
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving What is the resonant frequency of a circuit when L of 25 microhenrys and C of 1… Read More
2024-04-13 04:28
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A coil has a resistance of 50 ohms and a reactance of 70 ohms. A capacitor is c… Read More
2024-04-10 09:39
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A 5 mH pure inductance is connected in parallel with one microfarad capacitor… Read More
2024-04-10 09:21
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving Three impedances Za, Zb and Zc are connected in parallel. If at 60 Hz, Za = j8… Read More
2024-04-10 08:54
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A non-inductive resistor R is connected in parallel with an i… Read More
2024-04-10 07:47
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A coil has a resistance of 50 ohms and a reactance of 100 ohms, is shunte… Read More
2024-04-10 06:19
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving What capacitance must be placed in series with an inductance of 0.05 Henry so t… Read More
2024-04-10 05:37
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving One leg of a radio-tuned circuit has a capacitance of 1 x 10-9 F. It is tuned a… Read More
2024-04-10 05:15
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving Capacitor of 30-microfarad capacitance is in series wi… Read More
2024-04-10 04:58
Problem Statement: Electrical Engineering Professional Subjects Electric Circuits: AC Circuits Problem Solving A loudspeaker whose inductance is 1.15 Henry is coupled to a power tube through… Read More
2024-04-09 08:53
Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems Acoustics Problem Solving A pipe is observed to have a fundamental frequency of 345 Hz. Assume the pipe is filled with… Read More
2024-04-09 08:23
Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems Acoustics Problem Solving A flute has a length of 58.0 cm. If the speed of sound in air is 343 m/s, what is the fundam… Read More
2024-04-06 12:12
Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems Acoustics Problem Solving A tuning fork oscillates at 284 Hz in air. Compute the wavelength of the tone emitted at 25… Read More
2024-04-06 06:22
Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems Acoustics Problem Solving A sound has an intensity of 3.00 x 108 W/m². What is the sound level in dB? a. 34.1712… Read More
2024-04-06 04:35
Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems Acoustics Problem Solving Compute the speed of sound in a monatomic ideal gas at 27.0°C. Use M = 20.18 kg/kmol. a… Read More
2024-04-06 04:01
Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems Acoustics Problem Solving An explosion occurs at a distance of 6.00 km from a person. How long after the explosion, do… Read More
2024-04-06 03:28
Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems Acoustics Problem Solving A sound wave in air has a pressure amplitude equal to 4.00 × 10^−3 Pa. Calculate… Read More
2024-04-06 03:02
Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems Acoustics Problem Solving What is the sound level of a sound wave with intensity 6.40 × 10^−5 W/m^2? Probl… Read More
2024-04-05 09:50
Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems Acoustics Problem Solving What sound intensity level in dB is produced by earphones that create an intensity of 4.00 x… Read More
2024-04-05 08:42
Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems Acoustics Problem Solving If a large housefly 3.0 m away from you makes a noise of 40.0 dB, what is the noise level of… Read More
2024-04-05 08:21
Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems Acoustics Problem Solving A sound wave traveling in 20°C air has a pressure amplitude of 0.832 Pa. What is the int… Read More
2024-04-05 08:00
Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems Acoustics Problem Solving A sound wave traveling in 20°C air has a pressure amplitude of 0.853 Pa. What intensity… Read More
2024-04-05 06:23
Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems Acoustics Problem Solving A source of sound having a frequency of 300 Hz is moving at 25 m/s. If the speed of sound in… Read More
2024-04-05 06:00
Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems Acoustics Problem Solving A source of sound and an observer are moving directly toward each other. The source has a fr… Read More
2024-04-05 05:12
Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems Acoustics Problem Solving A train engineer blows a whistle of 400-Hz frequency as the train approaches a station. If t… Read More
2024-04-05 04:28
Problem Statement: Acoustics, Broadcasting and Cable TV Systems Systems Acoustics Problem Solving What is the expected critical frequency for a 120 mm thick brick wall? Assume a longitudinal… Read More
2024-04-05 02:01
Problem Statement: Transmission and Antenna Systems Transmission Lines Problem Solving A generator sends a 250 W of power down a line. If the SWR of the line is 2.5, determine the power abso… Read More
2024-04-05 01:39
Problem Statement: Transmission and Antenna Systems Transmission Lines Problem Solving Calculate the SWR of the line if the characteristic impedance of the line is 75 ohms and is terminated… Read More
2024-03-22 08:39
This is the Multiple Choice Question Part 14 of the Series in Electricity and Magnetism Fundamentals as one of the Electronics Engineering topics. In Preparation for the ECE Board Exam make… Read More
2024-03-22 08:13
This is the Multiple Choice Question Part 13 of the Series in Electricity and Magnetism Fundamentals as one of the Electronics Engineering topics. In Preparation for the ECE Board Exam make… Read More
2024-03-20 08:06
Problem Statement: Transmission and Antenna Systems Radiation and Wave Propagation Problem Solving A TV broadcast station has a transmitting antenna located 20 m above the ground. What is th… Read More
2024-03-20 07:46
Problem Statement: Transmission and Antenna Systems Radiation and Wave Propagation Problem Solving What is the critical angle of the signal when it passes from glass, with a relative permitt… Read More
2024-03-10 04:31
Problem Statement: Transmission and Antenna Systems Radiation and Wave Propagation Problem Solving A shortwave transmitter uses sky wave propagation. What is the angle of incidence if the MU… Read More
2024-03-09 07:00
Problem Statement: Transmission and Antenna Systems Radiation and Wave Propagation Problem Solving An unknown medium was used in a communication system. If the characteristic impedance of th… Read More
2024-03-09 05:00
Problem Statement: Transmission and Antenna Systems Radiation and Wave Propagation Problem Solving A VHF radio is to be established via the ionosphere. Assuming the earth is flat with a crit… Read More
2024-03-09 02:19
Problem Statement: Transmission and Antenna Systems Radiation and Wave Propagation Problem Solving A microwave transmitting antenna is 600 feet high. The receive antenna is 240 feet high. Th… Read More
2024-03-07 04:13
Problem Statement: Transmission and Antenna Systems Radiation and Wave Propagation Problem Solving What is the resultant field strength between waves travelling in different paths when the p… Read More
2024-03-07 04:01
Problem Statement: Transmission and Antenna Systems Radiation and Wave Propagation Problem Solving What is the maximum line of sight distance between a paging antenna 250 ft. high and a page… Read More
2024-03-07 03:40
Problem Statement: Transmission and Antenna Systems Radiation and Wave Propagation Problem Solving How far away is the radio horizon of an antenna 100 ft high? a. 14.14 miles b. 5.23 miles c… Read More
2024-03-02 03:34
Problem Statement: Transmission and Antenna Systems Antenna Problem Solving What is the efficiency of the antenna if the radiation resistance is 72 ohms and the loss resistance is 2 ohms? a… Read More
2024-03-02 03:17
Problem Statement: Transmission and Antenna Systems Antenna Problem Solving An antenna with a radiation resistance of 75 ohms and a loss resistance of 5 ohms, receives a 150 watts of power f… Read More
2024-03-02 03:07
Problem Statement: Transmission and Antenna Systems Antenna Problem Solving An antenna with a radiation resistance of 50 ohms and a loss resistance of 3 ohms receives 150 watts of power from… Read More
2024-03-01 02:56
Problem Statement: Transmission and Antenna Systems Antenna Problem Solving Calculate the actual length of a half-wave dipole operating at a frequency of 67.25 MHz. a. 4.2 m b. 1.2 m c. 3.1… Read More
2024-03-01 02:47
Problem Statement: Transmission and Antenna Systems Antenna Problem Solving Calculate the operating frequency of a half-wave dipole if the actual length is 3.5 meters. a. 40.7 MHz b. 21.3 MH… Read More
2024-03-01 02:29
Problem Statement: Transmission and Antenna Systems Antenna Problem Solving What is the gain of a half-wave dipole antenna if the antenna has an efficiency of 92%? a. 4.2 b. 1.3 c. 1.6 d. 1… Read More
2024-02-28 03:07
Problem Statement: Transmission and Antenna Systems Antenna Problem Solving The actual length of the Marconi antenna used in AM transmitter is 34 m. what is the operating frequency of the tr… Read More
2022-09-02 02:11
Pinoybix EngineeringMCQ in Computer Network and Networking Part 20 | ECE Board Exam
This is the Multiple Choice Questions Part 20 of the Series in Computer Network and Networking as one of t… Read More
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