Question is ⇒ A buffer amplifier is, Options are ⇒ (A) a double-tuned amplifier, (B) a high gain D.C. amplifier, (C) a cathode follower stage, (D) none of the above, (E) , Leave your comments or Download question paper.

Question is ⇒ A buffer amplifier is, Options are ⇒ (A) a double-tuned amplifier, (B) a high gain D.C. amplifier, (C) a cathode follower stage, (D) none of the above, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	A buffer amplifier is
A.	a double-tuned amplifier [Wrong Answer]
B.	a high gain D.C. amplifier [Correct Answer]
C.	a cathode follower stage [Wrong Answer]
D.	none of the above [Wrong Answer]
View Answer 2 -1 Explanation:- Answer : B 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 :

⇒ The multiplier resistance and meter coil in a voltmeter are in
series
parallel
series-parallel
either (a) or (b)

⇒ The main advantage of a crystal oscillator
can oscillate any frequency
gives a high output voltage
frequency of oscillation is almost constant
can operates at a low dc voltage

⇒ Thevenin's impedance of an ac network is in general
resistance
R and L in series
R and C in series
Either R and L or R and C in series

⇒ Both ROM and RAM can be accessed randomly.
TRUE
FALSE

⇒ Which of the following is not correct in C?
6 / 4 = 1
2 / 5 = 0
2.0 / 5 = 0
2.0 / 5.0 = 0.4

⇒ An RLC series circuit has R = 8 Ω, X_L = 8 Ω and X_C = 8 Ω Its impedance is
8 + j 16 Ω
8 + j 8 Ω
8 Ω
24 Ω

⇒ If the number of atoms per unit volume of a monoatomic gas changes, the dielectric constant still remains constant.
TRUE
FALSE

⇒ The 8085 microprocessor is interrupted while executing MOV instruction at location 0210 H. What is the location at which contents of register D are stored
054 CH
054 DH
054 EH
054 FH

⇒ Beamwidth (between first nulls) will be for an antenna at 3 MHz with directivity of 100
140°
70°
210°
60°

⇒ A rectangular waveguide is a
rectangular conducting wire to propagate electromagnetic waves
hollow rectangular walled room carrying electromagnetic wave
hollow rectangular conducting tube through which electromagnetic waves can be propagated
tube antenna to transmit and receive electromagnetic waves

⇒ In a common emitter circuit all voltages are measured with respect to
base
emitter
collector
base or collector

⇒ If (10) x x(10)_x = (100)_x; (100)_x x (100)_x = (10000)_x then x can take value
2
5
10
All

⇒ The instruction MOV M, r in 8085
causes content of register r to be moved to memory location whose address is in register H, L and uses register indirect addressing mode
causes the content of memory location whose address is in register H, L to move to register r and uses register indirect addressing mode
causes the content of register r to be moved to memory location whose address is in register H, L and uses immediate addressing mode
causes the content of memory location whose address is in register H, L to move to register r and uses immediate addressing mode

⇒ The commutation method in an inverter, is
line commutation
forced commutation
either (a) or (b)
none of the above

⇒ The Fourier series representation of a periodic current (2 + 62 cos ωt +48 sin 2ωt) A. The effective value is
(2 + 6 + 24) A
0.333333333333333
0.25
0.0833333333333333

⇒ DC tachogenerator can be used in
speed control system
position control system
both (a) and (b)
neither (a) nor (b)

⇒ Absolute instruments are used in
laboratories
industries
power houses
standard laboratories

⇒ The skip distance is the maximum distance upto which ionospheric reflection is possible.
TRUE
FALSE

⇒

Assertion (A): Hay's bridge in particularly suitable for measuring inductance having a comparatively low resistance.

Reason (R): In Hay's bridge the value of frequency supply must be known.

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

⇒ Which of the following are the non-linear application of op-amp?

Current-to-voltage converter
Comparator
Peak detector
Limiter

Select the correct answer from the codes given below:
1, 2 and 3
2, 3 and 4
1, 3 and 4
1, 2 and 4

⇒ When cells are connected in series, emfs of all cells must be equal.
TRUE
FALSE

⇒ Which of the following cannot provide as much time interval accuracy as the oscilloscope but can capture and display eight or more signals simultaneously, something that scopes cannot do?
Logic analyzer
Digital oscilloscope
Frequency analyzer
Wave analyzer

⇒ In order to receive a vertical polarized wave, the conductor of the dipole should be mounted
horizontally
vertically
at an angle of 45°
at an angle of 90°

⇒ Tape recorders use
cone type loudspeakers
horn type loudspeakers
either cone type or horn type loudspeakers
none of the above

⇒ A + (B . C) =
A . B + C
A . B + A . C
A
(A + B) . (A + C)

⇒ How many flag are there in 8085 microprocessor?
4
5
6
8

⇒ The circuit in the given figur
low pass filter
high pass filter
band Pass filter
band reject filter

⇒ The probability of recombination of electrons and holes in a semiconductor is proportional to
density of electrons
density of holes
density of electrons and holes
none of the above

⇒ An oscillator at 4.2 MHz is followed by two frequency doublers and two triplers. The output frequency will be
84 MHz
112.4 MHz
151.2 MHz
303.4 MHz

⇒ In the circuit of figure, the switch is closed at t = 0 with i_L (0) = 0 and V_C (0) = 0. In the steady state n_c equ
100 v
0 v
∞
- 100 v