Question is ⇒ The fourier transform of a voltage signal x(t) is X(f). The unit of X(f) is __________ ., Options are ⇒ (A) volts, (B) volt2, (C) volt/sec, (D) volt-sec, (E) , Leave your comments or Download question paper.

Question is ⇒ The fourier transform of a voltage signal x(t) is X(f). The unit of X(f) is __________ ., Options are ⇒ (A) volts, (B) volt2, (C) volt/sec, (D) volt-sec, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	The fourier transform of a voltage signal x(t) is X(f). The unit of X(f) is __________ .
A.	volts [Wrong Answer]
B.	volt² [Wrong Answer]
C.	volt/sec [Wrong Answer]
D.	volt-sec [Correct Answer]
View Answer 1 -1 Explanation:- Answer : D Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒ An amplifier with resistive -ve feedback has two left poles in its open loop transfer function. The amplifier
will always be unstable at high frequencies
will be stable for all frequencies
may be unstable, depending on the feedback factor
will oscillate at low frequencies

⇒ Armstrong modulator generates
AM signals
FM signals
PM signals
both (b) and (c)

⇒ If a number of even functions are added, the resultant sum is
even function
odd funtion
either even or odd function
mixture of odd amd even functions

⇒ For a high pass filter, β = p in attenuation band.
TRUE
FALSE

⇒ Dish antennas are
loop
helical
parabolic
conical

⇒ The ASCII code is
5-bit code
7-bit code
9-bit code
11-bit code

⇒ Hay bridge is suitable for measuring inductance of which one of the following inductors?
Having Q value less than 10
Having Q value greater than 10
Having any value of Q
Having phase angle of reactance very large

⇒ In a 5 x 7 dot matrix, format, to store 64 alphanumeric characters we require
1120 bits
2240 bits
33 bits
64 bits

⇒ For a Gaussian process, auto-correlation sequence also implies that
statistical independence
statistical dependence
ergodic process
all

⇒ In cell communication
carrier frequency change
carrier frequency constant
depend upon location
depend upon geographical area

⇒ Barkhausen criterion is 1 + A_vβ = 0.
TRUE
FALSE

⇒ The logic represented by the abbreviation ECL is
Emitter Coupled Logic
Electron Carrier Logic
Encoding Clock Logic
Electrostatic Channel Logic

⇒ In 8085 microprocessor, the interrupt enable flip-flop is reset by
DI instruction only
system RESET only
interrupt acknowledgment only
all of the above

⇒ A half adder can be used only for adding
1 s
2 s
4 s
8 s

⇒

Match the following:

	List I		List II
A.	h_ie	1.	49
B.	h_re	2.	25 x 10^-6siemens
C.	h_fe	3.	2.4 x 10^-4
D.	h_oe	4.	1000 ohms

A-1, B-2, C-3, D-4
A-4, B-3, C-2, D-1
A-3, B-4, C-1, D-2
A-4, B-3, C-1, D-2

⇒ In direct addressing mode of 8085
All instructions are 3 bytes long
All instructions are 3 bytes long except IN instruction which is 2 bytes long
All instructions are 3 bytes long except IN and OUT instructions which are 2 bytes long
All instructions are 2 bytes long

⇒ Hall coefficient is reciprocal of charge density.
TRUE
FALSE

⇒ Which of the following is not between F₂ layer and D layer?
E layer
F₁ layer
G region
All of the above

⇒ The combination of registers in 8085 is B-C, D-E, H-L only.
TRUE
FALSE

⇒ For the minterm designation Y = ∑ m (1, 3, 5, 7) the complete expression is
Y = A BC + A B C
Y = A B C + A B C + ABC + A BC
Y = A B C + A B C + ABC + A BC
Y = A B C + ABC + A BC + A BC

⇒ When the modulating frequency is doubled, the modulation index is halved and the modulating voltage remains constant. The modulation system is
FM
AM
phase modulation
none of the above

⇒ A sine wave with slew rate distortion looks like
step wave
square wave
triangular wave
cosine wave

⇒ In terms of ABCD parameters, the image parameter Z₁₁ is equal to
AC/BD
BD/AC
AB/CD
AD/BC

⇒ The current due to thermionic emission is given by Richardson Dushman equation.
TRUE
FALSE

⇒

Assertion (A): A rectifier with inductor filter is more efficient for high load current.

Reason (R): In rectifier with inductor filter we can use a larger choke to reduce ripple, larger choke will have higher dc resistance which will result in lower dc output voltage for higher load current.

Both A and R are individually true and R is the correct explanation of A
Both A and R are individually true but R is not the correct explanation of A
A is true but R is false
A is false but R is true

⇒ A Darlington emitter follower circuit is some times used in the output stage of a TTL gate in order to
increase its I_QL
reduce its I_0H
increase its speed of operation
reduce power dissipation

⇒ Which of the following are useful in comparing the noise performance of receivers?

Input noise voltage
Noise figure
Noise resistance
Noise temperature

Select answer as per the following codes:
1, 2 and 3
1, 3 and 4
2, 3, 4
1, 2, 4

⇒ In what condition does BJT act like an open switch
cut off
saturation
active
both (b) and (c)

⇒ A voltage v = 100 sin ωt + 10 sin 5 ωt is applied to a pure capacitor having capacitance of 1 μF. If ω = 314 rad/sec, the current through the capacitor is
0.0314 cos 314 t + 0.0157 cos 1570 t
0.0314 sin 314 t + 0.0157 sin 1570 t
0.0314 cos 314 t + 0.0314 cos 1570 t
0.0157 cos 314 t + 0.0157 cos 1570 t

⇒ The signal m(t) = 10 cos 100 pt is sampled at the rate of F_s = 75 H_z, then determine signal after sampling.
4 cos 100 pt + 8 sin 200 pt
4 cos 100 pt + 8 sin 200 pt + cos 75 pt
4 cos 25 pt + 8 sin 50 pt + cos 75 pt
none