If the peak value of a sine wave is 30 V, the rms value is?
A.19.08 V
B.7.07 V
C.0.707 V
D.23.10 V
Description : The average value of a 12 V peak sine wave over one complete cycle is? A.0 V B.1.27 V C.7.64 V D.6.37 V
Last Answer : The average value of a 12 V peak sine wave over one complete cycle is? A.0 V B.1.27 V C.7.64 V D.6.37 V
Last Answer : e
Description : The RMS value of a sine-wave current may also be expressed as the _____________. A. average value B. maximum value C. effective value D. instantaneous value
Last Answer : Answer: C
Description : For a sine wave with peak value Imax the r.m.s. value is?
Last Answer : For a sine wave with peak value Imax the r.m.s. value is 0.707.
Description : When a sine wave has a frequency of 100 Hz in 12 s it goes through? A.1/100 cycle B.12 cycles C.120 cycles D.1,200 cycles
Last Answer : When a sine wave has a frequency of 100 Hz in 12 s it goes through? A.1/100 cycle B.12 cycles C.120 cycles D.1,200 cycles
Description : A sine wave of 15 kHz is changing at a faster rate than a sine wave with a frequency of? B.12 kHz C.18 kHz D.1.3 MHz
Last Answer : A sine wave of 15 kHz is changing at a faster rate than a sine wave with a frequency of? B.12 kHz C.18 kHz D.1.3 MHz
Description : Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is? A.16.54 V B.1.65 V C.10.60 V D.5.93 V
Last Answer : Two series resistors are connected to an ac source. If there are 7.5 V rms across one resistor and 4.2 V rms across the other, the peak source voltage is? A.16.54 V B.1.65 V C.10.60 V D.5.93 V
Description : In the inverting configuration, what is the voltage (for all practical purposes) at the inverting input to the operational amplifier if the input signal is a 1-volt, peak-to-peak sine wave?
Last Answer : 0 volts.
Description : If the rms voltage drop across a 15 kilt resistor is 16 V, the peak current through the resistor is : - a) 15 mA b) 1.5 mA c) 10 mA d) 1 mA
Last Answer : If the rms voltage drop across a 15 kilt resistor is 16 V, the peak current through the resistor is : - 1.5 mA
Description : RMS value of rectangular wave of period T, having a value of +V for a duration T1(
Last Answer : a
Description : If the maximum amplitude of a sine wave is 2 V, the minimum amplitude is________ V. A) 2 B) 1 C) -2 D) between -2 and 2
Last Answer : -2
Description : What does the Voltmeter in AC mode show? Is it RMS value or peak value?
Last Answer : Multimeter in AC mode shows RMS value of the voltage or current. Also when it is DC mode it will show the RMS value only.
Description : Alternating current measured in a transmission line will be a) Peak value b) Average value c) RMS value d) Zero
Last Answer : c) RMS value
Description : The agreed standard for measuring loudness is the loudness sensation produced by a 1000 Hz sine wave _____ dB above the listener’s threshold of hearing. A. 80 B. 50 C. 30 D. 40
Last Answer : D. 40
Description : Instantaneous value of a sine wave voltage
Last Answer : Instantaneous value of a sine wave voltage
Description : The equation of 50 Hz current sine wave having r.m.s. value of 60 A is?
Last Answer : (60*√2)Sin(2π*50*t)
Description : Can I use eurometer calibrated in RMS to measure HWDC in peak?
Last Answer : No
Description : In AC circuits, AC meters measure – (1) mean values (2) rms values (3) peak values (4) mean square values
Last Answer : (2) rms values Explanation: Voltages and currents for AC circuits are generally expressed as rms (root mean square) values. For a sine wave, the relationship between the peak and the rms average is: rms value = 0.707 peak value.
Description : AC voltmeters are generally calibrated to read the ________. A. instantaneous voltage B. average voltage C. RMS voltage D. peak voltage
Description : External noise fields are measured in terms of _______. A. rms values B. dc values C. average values D. peak values
Last Answer : D. peak values
Description : The voltage at any point in an ac circuit will be a) Peak voltage b) RMS voltage c) Average voltage d) Source voltage
Last Answer : b) RMS voltage
Description : In AC circuits, AC meters measure (1) mean values (2) rms values (3) peak values (4) mean square values
Last Answer : rms values
Description : Find the power of a wave given that the RMS value of E and H are 6 and 4.5 respectively. a) 24 b) 27 c) 29 d) 32
Last Answer : b) 27
Description : In a half wave rectifier the rms value of AC component of the waves (a) Zero (b) Equal to DC value (c) More than DC value (d) Less than DC value
Last Answer : b) Equal to DC value
Description : Define : i) Average value ii) RMS value of an AC Wave.
Last Answer : i) Average value: The average value is defined as the average of all instantaneous values during one alternation . That is, the ratio of the sum of all considered instantaneous values to the ... as produced by the alternating current when flowing through the same resistance for the same time.
Description : When the peak output voltage is 100 V the PIV for each diode in a center-tapped full-wave rectifier is (neglecting the diode drop)?
Last Answer : Feel Free to Answer
Description : An AC supply of 230 V is applied to half wave rectifier circuit. A transformer turns ratio is 20 : 1. Find i) Output DC voltage (ii) Peak Inverse Voltage (PIV)
Last Answer : Solution:
Description : RF Design Question: 40MHz to 10MHz sine wave?
Last Answer : Is the 40 MHz manufacturered digitally? Do you have access to the clock/driver oscillator? Is everything analog? Can you add a 30 MHz signal and filter out the resulting 10 and 70 Mhz beats? You can synthesize a 10 MHz yourself with either a 555 timer or a Statek chip.
Description : Why is sine wave used more ?
Last Answer : Sine wave is used more because the output of the circuit with sine wave input is better. Calculation of sinusoidal voltage , current etc. is easy. Disruption caused by harmonics is less. Noise of AC circuit with sine wave is less.
Description : Otp shows then disconnect's in zelio sine wave inverter luminous 1600va?
Last Answer : Need Answer
Description : At what phase angle is the voltage momentarily constant in a sine wave?
Last Answer : We often see the peak and trough (maximum positive and maximumnegative excursions) of the sine wave considered as points ofmomentarily constant voltage. Those points are at phase angles of90 degrees and at 270 degrees.
Description : What is The time it takes for a sine wave to complete one cycle is called?
Description : Should I Buy a Modified or Pure Sine Wave Inverter?
Last Answer : Many people are unsure of the differences between a modified or pure sine wave inverter. Think of a modified sine wave inverter as a set of stairs. You will get power in blocks and there will be times ... to draw a lot of power should always be run on a sine wave inverter for consistency and safety.
Description : A modulation which does not follow the sine wave pattern, it produces undesirable harmonics such as spurious emission A. 0% modulated B. Over-modulated C. Unmodulated D. 100% modulated
Last Answer : B. Over-modulated
Description : Graph of alternating current is a A. cos wave B. tan wave C. curve D. sine wave
Last Answer : sine wave
Description : A _________ sine wave is not useful in data communications; we need to send a _______signal. A) composite; single-frequency B) single-frequency; composite C) single-frequency;double-frequency D) none of the above
Last Answer : single-frequency; composite
Description : A sine wave in the ______domain can be representedby onesingle spikein the _____domain. A) time; frequency B) frequency; time C) time; phase D) phase; time
Last Answer : time; frequency
Description : A sine wave is ______ A) periodic and continuous B) aperiodicand continuous C) periodicand discrete D) aperiodicand discrete
Last Answer : periodic and continuous
Description : When sine wave is given as input to Schmitt trigger then its generates a) Sine wave b) Saw tooth wave c) Triangle wave d) Square wave
Last Answer : Ans: Square wave
Description : Can a pure sine wave be integrated? Why?
Last Answer : A pure sine wave cannot be integrated; it contains no harmonics.
Description : Which portion of a sine-wave input is retained in the output of a series-negative limiter?
Last Answer : Positive.
Description : Which portion of a sine-wave input is retained in the output of a series-positive limiter?
Last Answer : Negative.
Description : Name a disadvantage of sine-wave oscillator synchronizers.
Last Answer : It requires additional shaping circuits.
Last Answer : . It requires additional shaping circuits.
Description : How do you calculate the wavelength of a sine wave?
Last Answer : Wavelength = rate of travel × period.
Description : What determines the frequency of a sine wave?
Last Answer : The rate at which the vector which is generating the sine wave is rotating.
Description : What is the instantaneous amplitude of a sine wave?
Last Answer : The value at any given point on the sine wave.
Description : If a transformer primary is energised from a square wave voltage source, its output voltage will be (A) A square wave. (B) A sine wave. (C) A triangular wave. (D) A pulse wave.
Last Answer : (A) A square wave.
Description : (i) Draw the time domain and frequency domain representation of sine wave and triangular wave. (ii) Define frequency and wavelength.
Last Answer : (i)Time domain and frequency domain representation of sine wave time domain and frequency domain representation of triangular wave. ii) Define frequency and wavelength. Frequency ... : Wavelength can be defined as the distance between two successive crests troughs of a wave.
Description : Draw block diagram of AF sine and square wave generator and explain its working
Last Answer : The AF signal generator, which generates either sine wave or square wave in the range of audio frequencies based on the requirement is called AF Sine and Square wave generator. Its block diagram is shown ... can be used to produce either AF sine wave or AF square wave based on the requirement.