Physical Layer MCQ-Data & Signal objective question for gate
Q1. Multiple Signals shared a Channel link called as ?
(a) Multiplexing
(b) Modulation
(c) Signaling
(d) None
Correct Answer:- (a) Multiplexing
Q2. Position of sine wave relative to 0 time ?
(a) Phase
(b) Frequency
(c) Period
(d) Wavelength
Correct Answer:- (a) Phase
Q3. _____________________ is a distance measure by signal in a one complete cycle ?
(a) Phase
(b) Frequency
(c) Period
(d) Wavelength
Correct Answer:- (d) Wavelength
Q4. _____________________ is a maximum rate of data transfer between two points ?
(a) Phase
(b) Frequency
(c) Bandwidth
(d) Wavelength
Correct Answer:- (c) Bandwidth
Q5. How many no of bits transmitted in one second time is called ?
(a) Phase
(b) Frequency
(c) Bit Rate
(d) Wavelength
Correct Answer:- (c) Bit Rate
Q6. How much distance cover by one bit is called ?
(a) Phase
(b) Frequency
(c) Bit Rate
(d) Bit Length
Correct Answer:- (c) Bit Length
Q.7. f=1/T in this formula f is represent by
(a) frequency
(b) filer time
(c) full fill ration
(d) none
Correct Answer:- (a) Frequency
Q.8. suppose highest frequency of signal is 50 Hz and lowest frequency of signal is 40 Hz. Then what is bandwidth of signal?
(a) 10
(b) 90
(c) 45
(d) None
Correct Answer:- (a) 10
Also Read: Routing Algorithm MCQs
Explanation :- Bandwidth= Highest frequency – lowest frequency
here Highest frequency is 50 Hz and lowest frequency 40 Hz
Bandwidth= 50-40=10 Hz
Q.9. suppose highest frequency of signal is 50 Hz and Bandwidth of signal is 10 Hz. Then what is lowest frequency of signal ?
(a) 40
(b) 90
(c) 45
(d) None
Correct Answer:- (a) 40
Explanation :- Bandwidth= Highest frequency – lowest frequency
here Highest frequency is 50 Hz and Bandwidth is 10 Hz
10= 50-lowest frequency
lowest frequency=50-10=40 Hz
Q.10. When frequency increases then period_________________ ?
(a) decreases
(b) same
(c) Increases
(d) twice
Correct Answer:- (a) decreases
Explanation :- f=1/T
Q11. highest value at any point of wave represent by
(a) Phase
(b) Wavelength
(c) Peak Amplitude
(d) None
Correct Answer:- (c) Peak Amplitude
Q.12. suppose frequency of signal is 50 Hz and then calculate the time that require to complete one wave cycle?
(a) 0.01
(b) 0.50
(c) 100
(d) 0.02
Correct Answer:- (d) 0.02
Explanation :- f=1/T
so T=1/f
T=1/50=0.02
Q.13. suppose a signal take 0.02 sec time that require to complete one wave cycle then what is frequency of signal ?
(a) 0.01
(b) 0.50
(c) 50
(d) 100
Correct Answer:- (c) 50
Explanation :- f=1/T
so f=1/0.02
f=50