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Some ADCs are
| |
A. | 1 only [Wrong Answer] |
B. | 1, 3, 4 [Correct Answer] |
C. | 1, 2, 3 [Wrong Answer] |
D. | 1, 5, 6 [Wrong Answer] |
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Explanation:-
Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ The forbidden energy gap between the valence band and conduction band will be wide in case of
semiconductors
all metals
good conductors of electricity
insulators
⇒ In 8085 microprocessor with memory mapped I/O which of the following is true?
I/O devices have 16 bit addresses
I/O devices are accessed during IN and OUT instructions
There can be a maximum of 256 input and 256 output devices
Logic operations can not be performed
⇒ For the logic circuit of the given figure the simplified Boolean equa
Y = (A + B) (C + D) (E + F)
Y = A = B + C + D + E + F
ABCDEF
ABC + DEF
⇒ ABCD + AB C D =
ABC
ABCD
A B D
ABCD
⇒ A circuit is replaced by its Thevenin's equivalent to find current through a certain branch. If V_{TH} = 10 V and R_{TH} = 20 Ω, the current through the branch
will always be 0.5 A
will always be less than 0.5 A
will always be equal to or less than 0.5 A
may be 0.5 A or more or less
⇒ The gain of a source follower is unity.
TRUE
FALSE
⇒ In figure what is the base current if V_{BE} = 0
10 mA
9.3 mA
10 μA
9.3 μA
⇒ A thyristor has a maximum allowable junction temperature of 120°C and the ambient temperature is 40°C. If thermal resistance is 1.6° C/W, the maximum allowable internal power dissipation is
20 W
50 W
92 W
128 W
⇒ A line is excited by a 100 V dc source. If reflection coefficients at both ends are 1 each then
there will be no oscillations on line
there will be only 1 or 2 oscillations on line
there will be a finite number of oscillations on line
the oscillations will continue indefinitely
⇒ In an ac single phase energy meter, the potential coil is put on
both side limbs, of upper magnet
central limb of upper magnet
one side limb of upper magnet
either (a) or (b)
⇒ Bandwidth is proportional to speed of response.
TRUE
FALSE
⇒ When the carrier is unmodulated, a certain transmitter radiates 9 kW when the carrier is sinusoidally modulated the transmitter radiates 10.125 kW. The modulation index will be
0.1
10.15
0.4
0.5
⇒ The number of noise sources in a BJT are
3
2
1
4
⇒ A control system is as shown in given figure The maximum value of gain K for which the system is stable
more than 5
equal to 5
less than 1
less than 5
⇒ A low noise device is most important
at front end of equipment
in the last stage of equipment
in the middle stages of equipment
both (b) and (c)
⇒ In radio receiver, the maximum contribution to noise is from
mixer stage
power supply
power amplifier
equally from above three
⇒ In figure, the switch is closed at t = 0. After some time i = 6A and rate of change of current was 4A/s. The value of inducto
1 H
1.5 H
indeterminate
0.5 H
⇒ Examine the following statements
3 only
2 and 3 only
1 and 3 only
2 only
⇒ A Hartley oscillator uses FET with g_{m} of 2 ms and r_{d} = 2 KΩ. The total coil inductance is 10 μH with turns ratio of input to output side of 1 : 10. It is tuned with a 50 pf capacitor. Find frequency of oscillations, amplifier gain margin in dB.
7.11 MHz, 13.97 dB
7.3 MHz, 14.1 dB
6.93 MHz, 12.9 dB
7.4 MHz, 13 dB
⇒ Out of the three transforms viz. Z-transform, Laplace transform and Fourier transform
all three are used in continuous time domain
all three are used in both continuous time domain and discrete time domain
Z transform is used in continuous time domain while Laplace and Fourier transforms are used in discrete time domain
Z transform is used is discrete time domain while Laplace and Fourier transforms are used in continuous time domain
⇒ (62)_{10} in binary system is
110000
111100
111110
111111
⇒ An RC snubber circuit is used to protect a thyristor against :
false triggering
failure to turn on
switching transients
failure to commutate
⇒ Which of the following are true for relative dielectric constant?
1 and 2 only
2 and 3 only
1 and 3 only
1, 2 and 3
⇒ A full wave rectifier circuit using centre tapped transformer and a bridge rectifier are fed at 100 V, 50 Hz. The frequencies of outputs in these two rectifiers are
100 Hz each
50 Hz each
100 Hz and 50 Hz
50 Hz and 100 Hz
⇒ The action of bellows is similar to that of
mass
viscous friction
spring
none of the above
⇒ The minimum step size required for a Delta modulator operating at 36 samples/sec to track the signal (here u(t) is the unit step function) x(t) = 125t (u(t) - u(t - 1)) + (250 - 125t) (u(t - 1) - u(t - 2)) So that slope overload is avoided, would be
2^{-10}
2^{-8}
2^{-6}
2^{-4}
⇒ Emitter follower is in which of following configuration.
common Base
common Emitter
common collector
common Base or common Emitter
⇒ The inputs A, B, C of the given figure are applied to a 3 input NOR gate. The outpu
HIGH from 4 to 0
LOW from 0 to 4
HIGH from 0 to 1 and LOW from 1 to 4
LOW from 0 to 2 and HIGH from 2 to 4
⇒ For a flexible cable, most suitable insulation is
magnesium oxide
glass fibre
insulating tape
polyvinyl chloride
⇒ Find resistance R_{B} to bring transistor to threshold of saturation (V_{CB} = 0), V_{BE} = 0.7 V, a =
1.5 KΩ
15 KΩ
10 KΩ
1 KΩ
⇒ The forbidden energy gap between the valence band and conduction band will be wide in case of
semiconductors
all metals
good conductors of electricity
insulators
⇒ In 8085 microprocessor with memory mapped I/O which of the following is true?
I/O devices have 16 bit addresses
I/O devices are accessed during IN and OUT instructions
There can be a maximum of 256 input and 256 output devices
Logic operations can not be performed
⇒ For the logic circuit of the given figure the simplified Boolean equa
Y = (A + B) (C + D) (E + F)
Y = A = B + C + D + E + F
ABCDEF
ABC + DEF
⇒ ABCD + AB C D =
ABC
ABCD
A B D
ABCD
⇒ A circuit is replaced by its Thevenin's equivalent to find current through a certain branch. If V_{TH} = 10 V and R_{TH} = 20 Ω, the current through the branch
will always be 0.5 A
will always be less than 0.5 A
will always be equal to or less than 0.5 A
may be 0.5 A or more or less
⇒ The gain of a source follower is unity.
TRUE
FALSE
⇒ In figure what is the base current if V_{BE} = 0
10 mA
9.3 mA
10 μA
9.3 μA
⇒ A thyristor has a maximum allowable junction temperature of 120°C and the ambient temperature is 40°C. If thermal resistance is 1.6° C/W, the maximum allowable internal power dissipation is
20 W
50 W
92 W
128 W
⇒ A line is excited by a 100 V dc source. If reflection coefficients at both ends are 1 each then
there will be no oscillations on line
there will be only 1 or 2 oscillations on line
there will be a finite number of oscillations on line
the oscillations will continue indefinitely
⇒ In an ac single phase energy meter, the potential coil is put on
both side limbs, of upper magnet
central limb of upper magnet
one side limb of upper magnet
either (a) or (b)
⇒ Bandwidth is proportional to speed of response.
TRUE
FALSE
⇒ When the carrier is unmodulated, a certain transmitter radiates 9 kW when the carrier is sinusoidally modulated the transmitter radiates 10.125 kW. The modulation index will be
0.1
10.15
0.4
0.5
⇒ The number of noise sources in a BJT are
3
2
1
4
⇒ A control system is as shown in given figure The maximum value of gain K for which the system is stable
more than 5
equal to 5
less than 1
less than 5
⇒ A low noise device is most important
at front end of equipment
in the last stage of equipment
in the middle stages of equipment
both (b) and (c)
⇒ In radio receiver, the maximum contribution to noise is from
mixer stage
power supply
power amplifier
equally from above three
⇒ In figure, the switch is closed at t = 0. After some time i = 6A and rate of change of current was 4A/s. The value of inducto
1 H
1.5 H
indeterminate
0.5 H
⇒ Examine the following statements
- Air and gases are compressible.
- Air, gases and some liquids are compressible.
- Oil can function as hydraulic fluid as well as lubricator.
3 only
2 and 3 only
1 and 3 only
2 only
⇒ A Hartley oscillator uses FET with g_{m} of 2 ms and r_{d} = 2 KΩ. The total coil inductance is 10 μH with turns ratio of input to output side of 1 : 10. It is tuned with a 50 pf capacitor. Find frequency of oscillations, amplifier gain margin in dB.
7.11 MHz, 13.97 dB
7.3 MHz, 14.1 dB
6.93 MHz, 12.9 dB
7.4 MHz, 13 dB
⇒ Out of the three transforms viz. Z-transform, Laplace transform and Fourier transform
all three are used in continuous time domain
all three are used in both continuous time domain and discrete time domain
Z transform is used in continuous time domain while Laplace and Fourier transforms are used in discrete time domain
Z transform is used is discrete time domain while Laplace and Fourier transforms are used in continuous time domain
⇒ (62)_{10} in binary system is
110000
111100
111110
111111
⇒ An RC snubber circuit is used to protect a thyristor against :
false triggering
failure to turn on
switching transients
failure to commutate
⇒ Which of the following are true for relative dielectric constant?
- It is dimensionless.
- It is equal to 1 for vacuum.
- It is equal to 1 for all substances.
1 and 2 only
2 and 3 only
1 and 3 only
1, 2 and 3
⇒ A full wave rectifier circuit using centre tapped transformer and a bridge rectifier are fed at 100 V, 50 Hz. The frequencies of outputs in these two rectifiers are
100 Hz each
50 Hz each
100 Hz and 50 Hz
50 Hz and 100 Hz
⇒ The action of bellows is similar to that of
mass
viscous friction
spring
none of the above
⇒ The minimum step size required for a Delta modulator operating at 36 samples/sec to track the signal (here u(t) is the unit step function) x(t) = 125t (u(t) - u(t - 1)) + (250 - 125t) (u(t - 1) - u(t - 2)) So that slope overload is avoided, would be
2^{-10}
2^{-8}
2^{-6}
2^{-4}
⇒ Emitter follower is in which of following configuration.
common Base
common Emitter
common collector
common Base or common Emitter
⇒ The inputs A, B, C of the given figure are applied to a 3 input NOR gate. The outpu
HIGH from 4 to 0
LOW from 0 to 4
HIGH from 0 to 1 and LOW from 1 to 4
LOW from 0 to 2 and HIGH from 2 to 4
⇒ For a flexible cable, most suitable insulation is
magnesium oxide
glass fibre
insulating tape
polyvinyl chloride
⇒ Find resistance R_{B} to bring transistor to threshold of saturation (V_{CB} = 0), V_{BE} = 0.7 V, a =
1.5 KΩ
15 KΩ
10 KΩ
1 KΩ