Question is ⇒ A trigonometric series has, Options are ⇒ (A) single sided spectra, (B) zero, (C) sync function, (D) undefined, (E) , Leave your comments or Download question paper.

Question is ⇒ A trigonometric series has, Options are ⇒ (A) single sided spectra, (B) zero, (C) sync function, (D) undefined, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	A trigonometric series has
A.	single sided spectra [Correct Answer]
B.	zero [Wrong Answer]
C.	sync function [Wrong Answer]
D.	undefined [Wrong Answer]
View Answer 1 -2 Explanation:- Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

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⇒

Match the following:

	List I (Types of N-bit ADC)		List II (Characteristics)
A.	Flash converter	1.	Integrating Type
B.	Successive	2.	Fastest converter approximation
C.	Counter ramp	3.	Maximum conversion time = N bits
D.	Dual slow	4.	Used a DAC in its feedback path

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

⇒

Match the following:

	List I		List II
A.	Interface	1.	A measure of rate of data transmission
B.	A bit	2.	A binary digit
C.	Band speed	3.	The common boundary between various sections and subsections
		4.	A/D converter

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

⇒ A receiver having poor IF selectivity will also have poor
sensitivity
double spotting
blocking
all of the above

⇒ The conductivity of a semiconductor crystal due to any current carrier is not proportional to
mobility of the carrier
effective density of states in the conduction band
electronic charge
surface states in the semiconductor

⇒ The expression Y (A, B, C) = ∑m (1, 3, 5, 6) is to realized using a multiplexer. Then
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use 8 : 1 multiplexer and ground input lines 0, 2, 4, 7
use 8 : 1 multiplexer and ground input lines 0, 1, 2, 3
use 8 : 1 multiplexer and ground input lines 4, 5, 6, 7

⇒ According to Barkhausen criteria in order to sustain the oscillations
loop gain of the circuit must be negligible
loop gain of the circuit must be equal to unity
the phase shift around the circuit must be 180°
none of the above

⇒

Assertion (A): The main use of positive feedback is in oscillator circuits.

Reason (R): In an oscillator the loop gain Aβ is kept slightly more than unity

Both A and R are correct and R is correct explanation for A
Both A and R are correct but R is not correct explanation for A
A is correct R is wrong
A is wrong R is correct

⇒ What kind of signal does the times produce?
Single pulse
Square wave
Continuous pulse
No signal

⇒ A small signal source v_i(t) = A cos 20t + B sin10⁶t is applied to a transistor amplifier as shown below. The transistor has β = 150 and h_ie = 3 kΩ. Which expression best approximates V₀(t<
v₀(t) = -1500 (A cos 20t + B sin 10⁶t)
v₀(t) = -150 (A cos 20t + B sin 10⁶t)
v₀(t) = -1500 B sin 10⁶t
V₀(t) = -1500 sin 10⁶t

⇒ By placing an inverter between both inputs of an S-R flip-flop, the resulting flip-flop becomes
J-K flip-flop
D-flip-flop
T-flip-flop
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⇒ Generally the gain of a transistor amplifier falls at high frequencies due to the
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⇒ Maximum usable frequency is [f_muf]
f_c sec i
f_c cos i
f_c sin i
f_c sec i

⇒ Two ammeters A and B are connected in parallel in a circuit carrying 100 A. Their resistances are 0.8 mΩ. Their readings will be.
55.56 and 44.44 A respectively
44.44 A and 55.56 A respectively
60 A and 40 A respectively
40 A and 60 A respectively

⇒ If the energy gap of a semiconductor is 1.1 eV, then it would be
opaque to visible light
transparent to visible light
transparent to ultraviolet radiation
transparent to infrared radiation

⇒
Assertion (A): To add 8 bit words, two 1C 74181 can be cascaded.
Reason (R): In 1C 74181 a sum greater than 15 leads to high carry out.

Both A and R are correct and R is correct explanation of A
Both A and R are correct but R is not correct explanation of A
A is correct R is wrong
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⇒
Match the following:
List I (Logic family) List II (Characteristic)
A. TTL 1. Maximum power consumption
B. ECL 2. Highest packing density
C. NMOS 3. Least power consumption
D. CMOS 4. Saturated Logic

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

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P-channel MOSFET
UJT with N-type base
N-channel DEMOSFET with internal zener protection
P-channel DEMOSFET with internal zener protection

⇒ In an end fire array, the radiation pattern
is in the plane of array
is at right angles to array
is at an angle to the plane of array
either (b) or (c)

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beam width
input capacitance
bandwidth

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F = A - C
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F = B ⊕ C

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360 KB each
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0

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80°C
120°C
200°C

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an impulse function originating at t = b
a unit doublet originating at = t - b
none of the above

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Both the MOSFET are in triode region
n-MOSFET is in triode and p-MOSFET is in saturation region
n-MOSFET is in saturation and p-MOSFET is in triode region}

⇒ Energy = voltage x charge.
TRUE
FALSE

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none of the above

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A.	TTL	1.	Maximum power consumption
B.	ECL	2.	Highest packing density
C.	NMOS	3.	Least power consumption
D.	CMOS	4.	Saturated Logic

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