➤ Hello In this page provides you Question/MCQ In this question Based on the Modulation ,Demodulation, pulse code modulation shift keying and ASK,FSK,PSK etc.
Q.1 Demoduation is
A) Detection B) Recovering information from modulating signal C) Botha a & b D) None
ANSWER= (C) Botha a & b
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Q.2 Which of the following process is constant in AM ?
A) Amplitude B) Frequemcy C) Phase D) Both B & C
ANSWER= (D) Both B & C
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Q.3 AM Demodulation techniques are ?
A) Square law Demodulator B) Envelop Detector C) Phase D) Both A & B
ANSWER= (D) Both A & B
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Q.4 The process of recovering information signal from the received carrier signal is known as ?
A) Modulation B) DE Modulation C) Detection D) None
ANSWER= (C) Detection
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Q.5 What is full form of FM in Modulation
A) Frequency Module B) Fresh Modulation C) Frequency Modulation D) None
ANSWER= (C) Frequency Modulation
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Q.6 The type of signal transmission in which no power is wasted on the carrier is known as
A) Amplitude Modulation B) Frequency Modulation C) Sideband suppressed carrier signal D) None
ANSWER= (C) Sideband suppressed carrier signal
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Q.7 Modulation is required for ?
A) Reducing noise while transmission B) Reduction of antenna height C) Multiplexing the signal D) All of the above
ANSWER= (D) All of the above
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Q.8 The advantage of using an RF amplifier are
A) Better Sensitivity B) Improved signal to noise ration C) Better selectivity D) All of the above
ANSWER= (D) All of the above
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Q.9 Modulation is an activity to convert ?
A) Analog to Digital B) Digital to Analog C) Digital to Binary D) None
ANSWER= (B) Digital to Analog
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Q.10 Demodulation is an activity to convert ?
A) Analog to Digital B) Digital to Analog C) Digital to Binary D) None
ANSWER= (A) Analog to Digital
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Q.11 Examples of low level modulation are
A) Square law dode modulation B) Switching modulation C) Packet modulation D) Both A & B
ANSWER= (D) Both A & B
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Q.12 Phase shift method is
A) Includes two balanced modulators B) Two phase shifiting networks C) Avoids the use of filters D) All of these
ANSWER= (D) All of these
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Q.13 In synchronous detectio of AM Signal is ?
A) Carrier is locally generated B) Passed through a low pass filter C) The original signal is recovered D) All of these
ANSWER= (D) All of these
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Q.14 What is full form of PM in Modulation
A) Phase Modulation B) Passed Modulation C) Phase Module D) None
ANSWER= (A) Phase Modulation
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Q.15 Ring Modulator is ?
A) Is used for DSB SC generation B) Consists of four diodes connection in the form of ring C) Is a product modulator D) All of these
ANSWER= (D) All of these
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Q.16 AM Demodulation techniques are
A) Square law demodulator B) Envelop detector C) PLL Detector D) Both A & B
ANSWER= (D) Both A & B
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Q.17 Square law modulators
A) Have non linear current voltage characteristics B) Are used for Amplitude Modulation C) Are used for frequency modulation D) Both A & B
ANSWER= (D) Both A & B
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Q.18 For low level modulation amplifier used is
A) Class A B) Class C C) Class B D) None
ANSWER= (A) Class A
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Q.19 QAM Stands for in Modulation(Network)
A) Quadrature Amplitude Modulation B) Quadrature Amplitude Module C) Quadrature Applied Modulation D) None
ANSWER= (A) Quadrature Amplitude Modulation
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Q.20 AGC Stands for in Modulation(Network)
A) Automatic gain Control B) Automation gain Control C) Automatic gain Control D) None
ANSWER= (C) Automatic gain Control
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