_______ describes the position of the waveform relative to time 0.
A)
Frequency
B)
Phase
C)
Amplitude
D)
Voltage

1 Answer

Answer :

Phase

Related questions

Description : In_____ transmission, the frequency of the carrier signal is modulated to follow the changing voltage level (amplitude)of the modulating signal. The peak amplitude and phase of the carrier signal remainconstant,but as ... of thecarrier changes correspondingly. A) AM B) PM C) FM D) none of the above

Last Answer : FM

Description : Draw amplitude modulated waveform in time domain and frequency domain with proper labeling.

Last Answer : AM in Time domain  AM in frequency domain

Description : Define the terms related to a.c. supply with waveform : i) Instantaneous value ii) Time period iii) Amplitude iv) Phase difference. 

Last Answer : i) Instantaneous value: The instantaneous value is the value of an alternating quantity (it may ac voltage or ac current or ac power) at a particular instant of time in the cycle .  OR  ... difference: Phase difference is the difference in phase angle between two sinusoids or phasors. 

Description : In a time-domain plot, the horizontal axis is a measure of ________. A) signal amplitude B) frequency C) phase D) time

Last Answer : time

Description : _______is the rateof change with respect totime. A) Amplitude B) Time C) Frequency D) Voltage

Last Answer : Time

Description : In________, the phase of thecarrier is varied to represent two or more different signal elements. Both peak amplitude and frequency remain constant. A) ASK B) PSK C) FSK D) QAM

Last Answer : PSK

Description : In________, the amplitude of the carrier signal is varied to create signal elements. Both frequency and phase remainconstant. A) ASK B) PSK C) FSK D) QAM

Last Answer : ASK

Description : In a frequency-domain plot, thehorizontal axis measures the________. A) peak amplitude B) frequency C) phase D) slope

Last Answer : frequency

Description : Bits can be sent over guided and unguided media as analog signal by ___________ a. digital modulation b. amplitude modulation c. frequency modulation d. phase modulation

Last Answer : a. digital modulation

Description : The absolute value of a signal's highest intensity is called………. A. Peak Amplitude B. Frequency C. Phase D. Both a and c

Last Answer : A. Peak Amplitude

Description : What type of transmission is radiated from an aircraft’s radio altimeter antenna? A. An amplitude modulated continuous wave B. A pulse position modulated UHF signal C. A differential phase shift keyed UHF signal D. A frequency modulated continuous wave

Last Answer : D. A frequency modulated continuous wave

Description : In_______, the peakamplitude of one signal level is 0; the other is thesame as the amplitude of the carrier frequency. A) PSK B) OOK C) FSK D) none of the above

Last Answer : OOK

Description : Weins bridge is used for measurement of frequency in the applied voltage waveform is measurement of frequency in the applied voltage waveform is   (A)sinusoidal (B) square (C) rectangular (D) triangular

Last Answer : Weins bridge is used for measurement of frequency in the applied voltage waveform is measurement of frequency in the applied voltage waveform is sinusoidal 

Description : The output voltage waveform of a three-phase square-wave inverter contains  (A) only even harmonics (B) both odd and even harmonic (C) only odd harmonics (D) only triple harmonics

Last Answer : C

Description : A single-phase voltage source square -wave inverter feeds pure inductive load. The waveform of the load current will be

Last Answer : A single-phase voltage source square -wave inverter feeds pure inductive load. The waveform of the load current will be triangular

Description : In an amplitude modulated waveform, the amplitude of the sideband is

Last Answer : 1/2 carrier amplitude x modulation index

Description : _________ utilization is the useof availablebandwidthto achieve specificgoals. A) Frequency B) Bandwidth C) Amplitude D) None of the abov

Last Answer : Bandwidth

Description : The _________ product defines the number ofbits that can fill the link. A) bandwidth-period B) frequency-amplitude C) bandwidth-delay D) delay-amplitude

Last Answer : bandwidth-delay

Description : The _____of a composite signal is the difference between the highest and the lowest frequencies contained in that signal. A) frequency B) period C) bandwidth D) amplitude

Last Answer : frequency

Description : In QAM,both ________ of acarrier frequencyare varied. A) frequencyand amplitude B) phase andfrequency C) amplitudeand phase D) none of the above

Last Answer : amplitudeand phase

Description : The maximum displacement of a vibrating body on either side of its central position is known as _______________. a)amplitude b)frequency c)time period d)hertz

Last Answer : a)amplitude

Description : In a Laser (say neon laser) all the atoms emit the light waves of – (1) Same frequency (2) Same amplitude (3) Same phase (4) All of the above

Last Answer : (4) All of the above Explanation: In a Laser all the atoms emit the light waves of same frequency, amplitude and phase. A laser is a device that emits light (electromagnetic radiation) ... photons. The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation.

Description : Amplitude of modulated wave is in phase with A. output B. system C. frequency D. signal

Last Answer : signal

Description : Standing waves are formed when two sets of waves of equal amplitude and frequency w) are in phase x) are in opposite phase y) move through each other in opposite directions z) are reflected from the same surface

Last Answer : ANSWER: Y -- MOVE THROUGH EACH OTHER IN OPPOSITE DIRECTIONS 

Description : In a Laser (say neon laser) all the atoms emit the light waves of (1) Same frequency (2) Same amplitude (3) Same phase (4) All of the above

Last Answer : All of the above

Description : Under normal conditions, the speed of a two-speed squirrel cage induction motor is changed by varying the ____________. A. frequency of the applied voltage B. resistance in the rotor circuit C. number of field poles D. amplitude of the applied voltage

Last Answer : Answer: C

Description : Sinusoids find amplitude, period, frequency, voltage (Problem 1)

Last Answer : Sinusoids find amplitude, period, frequency, voltage (Problem 1)

Description : One of the FM signal generator control which varies the phase of the modulating voltage applied to the oscillator of the sweep generator A. Band control B. Phase control C. Marker amplitude control D. Sweep output control

Last Answer : B. Phase control

Description : Signals with a frequency below 2 MHz use _______ propagation. A) ground B) sky C) line-of-sight D) none of the above

Last Answer : ground

Description : The _______ technique uses M different carrier frequencies that are modulated by the source signal. At one moment, the sign modulates one carrier frequency; at the next moment, thesignal modulates another carrier frequency. A) FDM B) DSSS C) FHSS D) TDM

Last Answer : FHSS

Description : In _______, the resources need to bereserved during the setup phase; the resources remain dedicated for the entire durationof data transfer phase until the teardownphase. A) datagram switching B) circuit switching C) frame switching D) none of the above

Last Answer : circuit switching

Description : _______ uses twocarriers, onein-phase andthe otherquadrature. A) ASK B) PSK C) FSK D) QAM

Last Answer : QAM

Description : Draw block diagram of Dual slope integrating voltmeter and also draw waveform for voltage V/s time. 

Last Answer : Block diagram

Description : The quality of sound depends upon its (a) Waveform (b) Frequency (c) Loudness (d) Pitch

Last Answer : Ans:(a)

Description : The pitch of sound is measured by its (a) Intensity (b) Waveform (c) Frequency (d) Loudness

Last Answer : Ans:(c)

Description : The pitch of the sound is measured by its: (1) Intensity (2) waveform (3) Frequency (4) Loudness

Last Answer : (3) Frequency Explanation: Pitch relates to the frequency, or how many times a second the particles vibrate. The distance between one wave and the next gives the wavelength. For sounds all travelling at the same speed, highfrequency (high-pitched) sounds have waves very close together.

Description : 32 With S2 closed and S1 open, the current waveform in the delta winding will be [GATE 2009] A. a sinusoidal at fundamental frequency B. flat-topped with third harmonic C. only third-harmonic D. none of these

Last Answer : C. Only third harmonic

Description : [31] With both S1 and S2 open, the core flux waveform will be [GATE 2009] A. a sinusoidal at fundamental frequency B. flat-topped with third harmonic C. peaky with third-harmonic D. none of these

Last Answer : B. Flat topped with third harmonic

Description : How should a tape recorder with good phase response reproduce a complex waveform, such as a square wave?

Last Answer : With no distortion

Description : Explain the concept of lagging and leading phase angle by waveform.

Last Answer : i) Leading phase angle :  When two ac quantities of same frequency do not attain their respective zero or peak values simultaneously, then the quantities are said to be out-of-phase quantities. The ... Similarly, in the second diagram, the voltage is said to be lagging the current by  Φ.

Description : Give the operation of single phase full wave bridge controlled converter with RL load with a neat diagram. Also draw its waveform.

Last Answer : Single phase fully control bridge converter with RL load: 1. During positive half cycle of input voltage, T1 and T2 are forward biased and during negative half cycle, T3 and T4 are forward biased. Therefore, T1-T2 ... cycle till the firing of next pair of SCRs as shown in the waveform.

Description : Draw sinusoidal waveform of 3 phase emf and indicate the phase sequence.

Last Answer : Phase sequence is R-Y-B.

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 : Describe the operation of inductor with sinusoidal AC voltage as input. Draw waveform for voltage across and current through the inductor. Draw its phasor representation.

Last Answer : An alternating voltage is applied to a purely inductive coil, a back e.m.f. is produced due to self-inductance of the coil. The back e.m.f. at every step, opposes the rise of fall of current through the coil ... drop, the applied voltage has to overcome this self induced e.m.f. only.

Description : For R-C series circuit draw (i) Circuit diagram (ii) Vector diagram (iii) Waveform of voltage and current

Last Answer : i) Circuit diagram ii)Vector diagram iii)Waveform of voltage and current

Description : Explain lagging quantity and leading quantity, explain this concept with voltage and current waveform

Last Answer : When two alternating quantities attain their respective zero or peak values simultaneously, the quantities are said to be in-phase quantities. When the quantities do not attain their respective zero or ... current is leading the voltage or the voltage is said to be lagging behind the current.

Description : A circuit that binds the upper or lower extreme of a waveform to a fixed DC voltage level is called ______ A) DC voltage restorer B) Clamping circuit C) Both A and B D) None of these

Last Answer : A circuit that binds the upper or lower extreme of a waveform to a fixed DC voltage level is called ______ A) DC voltage restorer B) Clamping circuit C) Both A and B D) None of these

Description : The input voltage to an OP AMP is a large voltage step. The output is an exponential waveform that changes to 0.25 V in 0.1µs (microsecond). The slew rate of the OP AMP is : -  a) 5V/µs b) 2.5 V/ µs c) 3V/µs d) 4.5V/ µs

Last Answer : The input voltage to an OP AMP is a large voltage step. The output is an exponential waveform that changes to 0.25 V in 0.1µs (microsecond). The slew rate of the OP AMP is : - 2.5 V/ µs

Description : A balanced three-phase, 50 Hz voltage is applied to a 3 phase, 4 pole, induction motor. When the motor is delivering rated output, the slip is found to be 0.05. The speed of the rotor m.m.f. relative to the rotor structure is (A) 1500 r.p.m. (B) 1425 r.p.m. (C) 25 r.p.m. (D) 75 r.p.m.

Last Answer : (D) 75 r.p.m.

Description : A constellation diagram shows us the __________ of a signal element, particularly when we areusing twocarriers (one in-phase and one quadrature). A) amplitudeand phase B) amplitudeand frequency C) frequencyand phase D) none of the above

Last Answer : amplitudeand phase