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Which of the following microphones has an inbuilt amplifier? | |
A. | Condenser [Correct Answer] |
B. | Moving coil [Wrong Answer] |
C. | Ribbon [Wrong Answer] |
D. | Carbon [Wrong Answer] |
View Answer
Explanation:-
Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ An end fire array consisting of several half-wave lengths of directive gain 40, then array length will be
10 λ
100 λ
20 λ
5 λ
⇒ In a JFET, the drain current is maximum when
V_{GS} = V_{DS}
V_{GS} = pinch off voltage
V_{GS} = 0
V_{GS} is negative
⇒ In a semiconductor material. The hole concentration is found to be 2 x 2.5 x 10^{15} cm^{-3}. If mobility of carriers is 0.13 m^{2}/ v-s. Then find the current density if electric field intensity is 3.62 x 10^{-19}
7.6237 x 10^{-4} A/cm^{2}
7.6237 x 10^{-5} A/cm^{2}
7.6237 x 10^{-3} A/cm^{2}
none of these
⇒ In given figure the switch was closed for a long time before opening at t = 0. The voltage V_{x} at t = 0^{+25 V50 V-50 V0 V}
⇒ The zeros of a minimum phase function lie on
imaginary axis
left half plane or origin
left half plane or imaginary axis
right half plane or origin
⇒ A counter has 4 flip flops. It divides the input frequency by
4
2
8
16
⇒ Which rectifier has the best ratio of rectification?
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Full wave rectifier
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⇒ If 1.5% of the output of an amplifier is feedback positively to the input, the minimum gain required of the amplifier for oscillations to occur, is
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⇒ The Boolean expression for the shaded area in the Venn diagra
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⇒ The equivalent T circuit of this coupled network is shown in figure. Find the values of Z_{A}, Z_{B} and Z_{C-j, 6j, 2j-j, 2j, 6jj, 2j, - 6jj, 2j, 6j}
⇒ If absolute potential of A is - 8 V and that of B is - 16 V, V_{AB} is equal to
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⇒ An end fire array consisting of several half-wave lengths of directive gain 40, then array length will be
10 λ
100 λ
20 λ
5 λ
⇒ In a JFET, the drain current is maximum when
V_{GS} = V_{DS}
V_{GS} = pinch off voltage
V_{GS} = 0
V_{GS} is negative
⇒ In a semiconductor material. The hole concentration is found to be 2 x 2.5 x 10^{15} cm^{-3}. If mobility of carriers is 0.13 m^{2}/ v-s. Then find the current density if electric field intensity is 3.62 x 10^{-19}
7.6237 x 10^{-4} A/cm^{2}
7.6237 x 10^{-5} A/cm^{2}
7.6237 x 10^{-3} A/cm^{2}
none of these
⇒ In given figure the switch was closed for a long time before opening at t = 0. The voltage V_{x} at t = 0^{+25 V50 V-50 V0 V}
⇒ The zeros of a minimum phase function lie on
imaginary axis
left half plane or origin
left half plane or imaginary axis
right half plane or origin
⇒ A counter has 4 flip flops. It divides the input frequency by
4
2
8
16
⇒ Which rectifier has the best ratio of rectification?
Half wave rectifier
Full wave rectifier
Bridge rectifier
Three phase full wave rectifier
⇒ Which one of the following theorem can be conveniently used to calculate the power consumed by the 10 Ω resistor in the network shown in the above fig
Thevenin's theorem
Maximum power transfer theorem
Millman's theorem
Superposition theorem
⇒ A full adder adds
2 bits
3 bits
4 bits
any number of bits
⇒ If the target cross-section is changing, the best scanning system for accurate tracking is
lobe switching
monopulse
sequential lobing
conical scanning
⇒ The following switching functions are to be implemented using a decoder
- f_{1} = ∑m (1, 2, 4, 8, 10, 14)
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- f_{3} = ∑m (2, 4, 5, 6, 7)
2 to 4 line
3 to 8 line
4 to 16 line
5 to 32 line
⇒ In an R-C circuit, the impedance is 40 Ω at a frequency of 100 Hz. At 200 Hz the impedance should be
40 Ω
80 Ω
20 Ω
more than 20 Ω but less than 40 Ω
⇒ For the time domain response shown in figure the
lies in left half plane
lies in right half plane
lies at origin
may be complex or imaginary
⇒ Effective address is calculated by adding or subtracting displacement value to
immediate address
Relative address
absolute address
base address
⇒ If 1.5% of the output of an amplifier is feedback positively to the input, the minimum gain required of the amplifier for oscillations to occur, is
16.6
44.4
66.6
75
⇒ Computer communication networks have
star configuration
tree configuration
loop/mesh configuration
All of the above
⇒ The Boolean expression for the shaded area in the Venn diagra
X + Y + Z
XY + Z + X YZ
X Y Z + XY
X + Y + Z
⇒ The radio horizon for space waves is about three-fourth as for as the optical horizon.
TRUE
FALSE
⇒ Which of the following materials has the highest electrical conductivity?
Steel
Silver
Aluminium
Zinc
⇒ In a transistor CE mode, V_{CC} = +30 V. If the transistor is in cut off region, V_{CE} =
+30 V
+20 V
10 V
zero
⇒ A long specimen of P type semiconductor material
is + vely charged
is electrically neutral
has an electric field directed along its length
acts as a dipole
⇒ If f=0
X_{L} = 0 and X_{C} = 0
X_{L} = ∞, X_{C} = ∞
X_{L} = 0 and X_{C} = ∞
X_{L} = ∞ and X_{C} = 0
⇒ The minority carrier life time and diffusion constant in a semiconductor material are respectively 100 microsecond and 100 cm^{2}/sec. The diffusion length is
0.1 cm
0.01 cm
0.0141 cm
1 cm
⇒ The inverse Fourier transform of δ(t) is
∪(t)
1
δ(t)
e^{j2pt}
⇒ E7F6_{16} = __________ .
600000_{10}
59382_{10}
9382_{10}
382_{10}
⇒ The equivalent T circuit of this coupled network is shown in figure. Find the values of Z_{A}, Z_{B} and Z_{C-j, 6j, 2j-j, 2j, 6jj, 2j, - 6jj, 2j, 6j}
⇒ If absolute potential of A is - 8 V and that of B is - 16 V, V_{AB} is equal to
24 V
8 V
- 8 V
- 24 V
⇒ Which of the following is a valid integer constant?
127
127
127
125 + 3
⇒ In a cable with ∈_{r} = 4, the wave velocity is
3 x 10^{8} m/s
0.75 x 10^{8} m/s
1.5 x 10^{8} m/s
10^{8} m/s
⇒ Figure shows the feedback network of one of the very popular types of sinusoidal oscillators. Which one is t
Weinbridge oscillator
Hartley oscillator
Colpitt's oscillator
R-C phase shift oscillator