1
GATE EE 2022
MCQ (Single Correct Answer)
+1
-0.33

The discrete time Fourier series representation of a signal x[n] with period N is written as $$x[n] = \sum\nolimits_{k = 0}^{N - 1} {{a_k}{e^{j(2kn\pi /N)}}} $$. A discrete time periodic signal with period N = 3, has the non-zero Fourier series coefficients : a$$-$$3 = 2 and a4 = 1. The signal is

A
$$2 + 2{e^{ - \left( {j{{2\pi } \over 6}n} \right)}}\cos \left( {{{2\pi } \over 6}n} \right)$$
B
$$1 + 2{e^{\left( {j{{2\pi } \over 6}n} \right)}}\cos \left( {{{2\pi } \over 6}n} \right)$$
C
$$1 + 2{e^{\left( {j{{2\pi } \over 3}n} \right)}}\cos \left( {{{2\pi } \over 6}n} \right)$$
D
$$2 + 2{e^{\left( {j{{2\pi } \over 6}n} \right)}}\cos \left( {{{2\pi } \over 6}n} \right)$$
2
GATE EE 2022
MCQ (Single Correct Answer)
+1
-0.33

As you grow older, an injury to your __________ may take longer to ___________.

A
heel / heel
B
heal / heel
C
heal / heal
D
heel / heal
3
GATE EE 2022
MCQ (Single Correct Answer)
+1
-0.33

In a 500 m race, P and Q have speeds in the ratio of 3 : 4. Q starts the race when P has already covered 140 m. What is the distance between P and Q (in m) when P wins the race?

A
20
B
40
C
60
D
140
4
GATE EE 2022
MCQ (Single Correct Answer)
+1
-0.33

Three bells P, Q and R are rung periodically in a school. P is rung every 20 minutes; Q is rung every 30 minutes and R is rung every 50 minutes. If all the three bells are rung at 12:00 P.M., when will the three bells ring together again the next time?

A
5:00 P.M.
B
5:30 P.M.
C
6:00 P.M.
D
6:30 P.M.
EXAM MAP
Medical
NEET
Graduate Aptitude Test in Engineering
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CBSE
Class 12