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The number of FF required for a divide by 12 circuit is | |
A. | 16 [Wrong Answer] |
B. | 12 [Wrong Answer] |
C. | 8 [Wrong Answer] |
D. | 4 [Correct Answer] |
View Answer
Explanation:-
Answer : D Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ A ripple counter has 4 bits and uses flip flops with propagation delay time of 25 ns. The maximum possible time for change of state will be
25 ns
50 ns
75 ns
100 ns
⇒ F's complement of (2BFD)_{hex} is
E 304
D 403
D 402
C 403
⇒
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
⇒ A modem is
a form of commutator
a device for digitizing speech
a circuit used for suppressing microwave mterference
an electronic circuit which carries out modulation and demodulation of a carrier frequency
⇒
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
⇒ Which of the following is correct?
y_{22} = z_{22}/|z|
y_{11} = z_{22}/|z|
z_{11} = y_{11}/|y|
z_{22} = y_{22}/|y|
⇒ Which of the following is not true as regards communication receiver?
It is exactly same as radio receiver used in households
It can be used, besides communication, for detection in high frequency bridges
It is designed to perform the task of low and high frequency reception better than in household receiver
Its tuning and operation are more complicated than those in household receiver
⇒ The number of interrupt lines in 8085 is
2
3
4
5
⇒ What happens when a paramagnetic material is heated above Curie temperature?
It becomes diamagnetic
It becomes nonmagnetic
It becomes ferromagnetic
It becomes anti-ferromagnetic
⇒ Silicon is not suitable for fabrication of light emitting diodes because it is
an indirect band gap semiconductor
direct band gap semiconductor
wideband gap semiconductor
narrowband gap semiconductor
⇒ All poles and zeros of a driving point immittance function of an L-C network
should lie on the jω axis
should lie on the +ve real axis
should lie on the - ve real axis
can lie anywhere in s-plane
⇒ A signal x(n) = sin(ω_{0}n + φ) is the input to a linear time invariant system having a frequency response H(e^{jω}) If the O/P of the system is Ax(n -n_{0}), then the general form of H(e^{jω}) will be
- n_{0}ω_{0} + β for any arbitrary real β
- n_{0}ω_{0} + 2pk for any arbitrary integer k
n_{0}ω_{0} + 2pk for any arbitrary integer k
- n_{0}ω_{0} + φ
⇒
A-3, B-2, C-4, D-1
A-1, B-3, C-2, D-4
A-1, B-2, C-3, D-4
A-2, B-1, C-4, D-3
⇒ Which of the following characteristic are necessary for a sequential circuit?
1, 2, 3
1, 2
2, 3
1, 3
⇒ In H-plane metal plate lens the travelling wave front is
totally retarded
retarded
accelerated
neither accelerated nor retarded
⇒ A dipole antenna was radiating with some excitation in free space radiating a certain amount of the power. If this antenna is immersed in a lake where water is non-dissipative but has a dielectric constant of 81, the radiated power with the same excitation will
decrease to finite non-zero value
remain the same
increase
decrease to zero
⇒ 1 GHz is equal to
10^{6} Hz
10^{8} Hz
10^{9} Hz
10^{10} Hz
⇒ Which of the following statement is correct for two wattmeters method of power measurement in 3 phase circuit?
Power can be measured by this method only for star connected loads
When two wattmeters have equal readings power factor is 0.5.
When power factor is 1, one of the wattmeters readings is zero
When the two wattmeter read equal and opposite, p.f. is zero.
⇒ The wavelength of light emitted by GaAs laser is 8670 x 10^{-10} m. If h = 6.626 x 10^{-34} Js, velocity of light = 3 x 10^{8} m/s and eV = 1.602 x 10^{-19} J, the energy gap in GaAs is
0.18 eV
0.7 eV
1.43 eV
2.39 eV
⇒ Two 16 : 1 and one 2 : 1 multiplexers can be connected to form a
16 : 1 multiplexer
32 : 1 multiplexer
64 : 1 multiplexer
8 : 1 multiplexer
⇒ The transfer function of a controller is given as K_{p} + K_{d}.s where K_{p} and K_{d} are constants. What type of controller is this?
Proportional
Proportional plus integral
Proportional plus derivative
Integral plus derivative
⇒ In a tuned class C power amplifier the quiescent value of collector to emitter voltage is equal to (V_{CC} denotes collector battery voltage)
V_{CC}
0.5 V_{CC}
0.25 V_{CC}
either (b) or (c)
⇒ Which of the following features is not associated with Nichols chart?
(0 dB, -180°) point on Nichols chart represent critical Point (-1, 0)
It is symmetric about -180°
M loci are centred about (0 dB, -180°) point
The frequency at intersection of G(jω) locus and M = +3 dB locus gives bandwidth of closed loop system
⇒ A 400 W carrier is modulated to a depth of 75 percent. The total power in modulated wave will be
38.5 W
400 W
512.5 W
615.5 W
⇒ Which one of the following is an indirect way of generating FM?
Armstrong modulator
Varactor diode modulator
Reactance FET modulator
Reactance bipolar transistor modulator
⇒ In a conductor the conduction and valence bands overlap
TRUE
FALSE
⇒ In a half wave diode rectifier circuit the current flows in the load circuit for
90° in each cycle
180° in each cycle
270° in each cycle
360° in each cycle
⇒
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 but R is false
A is false but R is true
⇒ In case of frequency modulation, modulating voltage remains constant if the modulating frequency is lowered, then
amplitude of distant sidebands decreases
amplitude of distant sidebands increases
amplitude of distant sidebands remains constant
amplitude of distant sidebands first increases, then decreases
⇒ For a flexible cable, most suitable insulation is
magnesium oxide
glass fibre
insulating tape
polyvinyl chloride
⇒ A ripple counter has 4 bits and uses flip flops with propagation delay time of 25 ns. The maximum possible time for change of state will be
25 ns
50 ns
75 ns
100 ns
⇒ F's complement of (2BFD)_{hex} is
E 304
D 403
D 402
C 403
⇒
Assertion (A): In a common source amplifier with source terminal at ac ground the voltage gain is about g_{m} r_{d}
Reason (R): A common source amplifier is a source follower circuit
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
⇒ A modem is
a form of commutator
a device for digitizing speech
a circuit used for suppressing microwave mterference
an electronic circuit which carries out modulation and demodulation of a carrier frequency
⇒
Assertion (A): Capacitance of a solid conducting spherical body of radius 'a' is given by 4 pε_{0}a in free space.
Reason (R): Δ x H = jωεE + J.
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
⇒ Which of the following is correct?
y_{22} = z_{22}/|z|
y_{11} = z_{22}/|z|
z_{11} = y_{11}/|y|
z_{22} = y_{22}/|y|
⇒ Which of the following is not true as regards communication receiver?
It is exactly same as radio receiver used in households
It can be used, besides communication, for detection in high frequency bridges
It is designed to perform the task of low and high frequency reception better than in household receiver
Its tuning and operation are more complicated than those in household receiver
⇒ The number of interrupt lines in 8085 is
2
3
4
5
⇒ What happens when a paramagnetic material is heated above Curie temperature?
It becomes diamagnetic
It becomes nonmagnetic
It becomes ferromagnetic
It becomes anti-ferromagnetic
⇒ Silicon is not suitable for fabrication of light emitting diodes because it is
an indirect band gap semiconductor
direct band gap semiconductor
wideband gap semiconductor
narrowband gap semiconductor
⇒ All poles and zeros of a driving point immittance function of an L-C network
should lie on the jω axis
should lie on the +ve real axis
should lie on the - ve real axis
can lie anywhere in s-plane
⇒ A signal x(n) = sin(ω_{0}n + φ) is the input to a linear time invariant system having a frequency response H(e^{jω}) If the O/P of the system is Ax(n -n_{0}), then the general form of H(e^{jω}) will be
- n_{0}ω_{0} + β for any arbitrary real β
- n_{0}ω_{0} + 2pk for any arbitrary integer k
n_{0}ω_{0} + 2pk for any arbitrary integer k
- n_{0}ω_{0} + φ
⇒
Match the following:
List I | List II | ||
---|---|---|---|
A. | Continuous and aperiodic | 1. | Fourier representation is continuous and aperiodic |
B. | Continuous and Periodic | 2. | Fourier representation is discrete and aperiodic |
C. | Discrete and aperiodic | 3. | Fourier representation is continuous and periodic |
D. | Discrete and periodic | 4. | Fourier representation is discrete and periodic |
A-3, B-2, C-4, D-1
A-1, B-3, C-2, D-4
A-1, B-2, C-3, D-4
A-2, B-1, C-4, D-3
⇒ Which of the following characteristic are necessary for a sequential circuit?
- It must have 6 gates
- It must have feedback
- Its output should depend on past value
1, 2, 3
1, 2
2, 3
1, 3
⇒ In H-plane metal plate lens the travelling wave front is
totally retarded
retarded
accelerated
neither accelerated nor retarded
⇒ A dipole antenna was radiating with some excitation in free space radiating a certain amount of the power. If this antenna is immersed in a lake where water is non-dissipative but has a dielectric constant of 81, the radiated power with the same excitation will
decrease to finite non-zero value
remain the same
increase
decrease to zero
⇒ 1 GHz is equal to
10^{6} Hz
10^{8} Hz
10^{9} Hz
10^{10} Hz
⇒ Which of the following statement is correct for two wattmeters method of power measurement in 3 phase circuit?
Power can be measured by this method only for star connected loads
When two wattmeters have equal readings power factor is 0.5.
When power factor is 1, one of the wattmeters readings is zero
When the two wattmeter read equal and opposite, p.f. is zero.
⇒ The wavelength of light emitted by GaAs laser is 8670 x 10^{-10} m. If h = 6.626 x 10^{-34} Js, velocity of light = 3 x 10^{8} m/s and eV = 1.602 x 10^{-19} J, the energy gap in GaAs is
0.18 eV
0.7 eV
1.43 eV
2.39 eV
⇒ Two 16 : 1 and one 2 : 1 multiplexers can be connected to form a
16 : 1 multiplexer
32 : 1 multiplexer
64 : 1 multiplexer
8 : 1 multiplexer
⇒ The transfer function of a controller is given as K_{p} + K_{d}.s where K_{p} and K_{d} are constants. What type of controller is this?
Proportional
Proportional plus integral
Proportional plus derivative
Integral plus derivative
⇒ In a tuned class C power amplifier the quiescent value of collector to emitter voltage is equal to (V_{CC} denotes collector battery voltage)
V_{CC}
0.5 V_{CC}
0.25 V_{CC}
either (b) or (c)
⇒ Which of the following features is not associated with Nichols chart?
(0 dB, -180°) point on Nichols chart represent critical Point (-1, 0)
It is symmetric about -180°
M loci are centred about (0 dB, -180°) point
The frequency at intersection of G(jω) locus and M = +3 dB locus gives bandwidth of closed loop system
⇒ A 400 W carrier is modulated to a depth of 75 percent. The total power in modulated wave will be
38.5 W
400 W
512.5 W
615.5 W
⇒ Which one of the following is an indirect way of generating FM?
Armstrong modulator
Varactor diode modulator
Reactance FET modulator
Reactance bipolar transistor modulator
⇒ In a conductor the conduction and valence bands overlap
TRUE
FALSE
⇒ In a half wave diode rectifier circuit the current flows in the load circuit for
90° in each cycle
180° in each cycle
270° in each cycle
360° in each cycle
⇒
Assertion (A): Electronic and Ionic polarization in a polyatomic gas are independent of temperature.
Reason (R): The orientation polarization is independent of temperature.
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 but R is false
A is false but R is true
⇒ In case of frequency modulation, modulating voltage remains constant if the modulating frequency is lowered, then
amplitude of distant sidebands decreases
amplitude of distant sidebands increases
amplitude of distant sidebands remains constant
amplitude of distant sidebands first increases, then decreases
⇒ For a flexible cable, most suitable insulation is
magnesium oxide
glass fibre
insulating tape
polyvinyl chloride