Q1. | The dual of A + [B + (AC)] + D is |

A. | A + [(B (A + C))] + D [Wrong Answer] |

B. | A [B + AC] D [Wrong Answer] |

C. | A + [B (A + C)] D [Wrong Answer] |

D. | A [B (A + C)] D [Correct Answer] |

View Answer
Explanation:-
Answer : DDiscuss it below :!! OOPS Login [Click here] is required to post your answer/resultHelp other students, write article, leave your comments |

**Also Read Similar Questions Below :**

⇒ The parameter β of a BJT change by 300%. If self bias is used in the amplifier using this BJT, the quiescent value of I

_{C}and V

_{CE}remain almost the same.

TRUE

FALSE

⇒ In figure, V

_{EB}= 0.6 V, β = 99. Then V

_{C}and I

_{C}

9.3 V and 1.98 mA respectively

4.6 V and 1.98 mA respectively

9.3 V and 0.02 mA respectively

4.6 V and 0.02 mA respectively

⇒ The resolution of a DAC depends on which of the following?

The number of bits

Monotonicity

Reference voltage

The values of resistance

⇒ Which of the following cannot be the Fourier series expansion of a periodic signal?

*x*(

*t*) = 2 cos

*t*+ 3 cos 3

*t*

*x*(

*t*) = 2 cos pt + 7 cos

*t*

*x*(

*t*) = cos

*t*+ 0.5

*x*(

*t*) = 2 cos 1.5p

*t*+ sin 3.5 p

*t*

⇒ Which of the following characteristics is not true for TTL Logic?

Good speed

Low power dissipation per gate

High cost

None of these

⇒ For the transport lag G(

*j*ω) =

*e*

^{-jωT}, the magnitude is always equal to

0

1

10

0.5

⇒ In microwave communication, some times, microwave signals reach large distances by following the earth curvature. This phenomenon is called

tropospheric scatter

faraday effect

ionospheric reflection

ducting

⇒ 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

⇒ In an AM wave the carrier and one of the side bands is suppressed. If

*m*= 1, the percentage saving in power is

0.25

0.5

0.666

0.833

⇒

**Assertion (A):** For networks in figure (1) and (2) sum of products of branch voltages and branch currents at any time is zero.

**Reason (R):** The networks in figure (1) and (2) are not the same structura

Both A and R are true and R is correct explanation of A

Both A and R are true and 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 polynomials is not Hurwitz?

P_{1} = *s*^{8} + 2*s*^{6} + 4*s*^{4}

P_{2} = *s*^{6} - 3*s*^{4} + 2*s*^{2} + 1

P_{3} = *s*^{4} + 3*s*^{3} + 3*s*^{2} + 2*s* + 1

P_{4} = *s*^{7} + 2*s*^{6} 2*s*^{4} + 4*s*^{3} + 8*s*^{2} + 8*s* + 4

⇒ Four capacitors are in parallel. Their values are 36.3 μF, 3.85 μF, 34.002 μF and 850 μF with an uncertainty of digit in the last place. The total capacitance in significant figures is

75.0 μF

75.0 ± 0.1 μF

75.1 ± 0.1 μF

75.002 ± 0.1 μF

⇒ The bunching action which occurs in multicavity klystron amplifier can be represented by Applegate diagram

TRUE

FALSE

⇒ FIR filter Passes __________ Phase.

non-linear phase

linear phase

variable phase

none

⇒ At very low frequencies a series R-C circuit behaves as almost purely __________ .

resistive

inductive

capacitive

none of the above

⇒ A synchro transmitter receiver unit is a

two phase ac device

3 phase ac device

dc device

1 phase ac device

⇒ Which of the following needs DC forward voltage to emit light?

LED

LCD

Both LED as well as LCD

None of the above

⇒

**Assertion (A):** SUS is a PUT and avalanche diode connected between gate and cathode

**Reason (R):** SBS has two SUS inbuilt together and connected in anti-parallel

Both A and R are correct and R is correct explanation of A

Both A and R correct but R is not correct explanation of A

A is correct but R is wrong

A is wrong but R is correct

⇒ Most small signal transistors are

N-P-N, silicon, in a plastic package

P-N-P, silicon, in a plastic package

N-P-N, germanium in a metallic case

P-N-P, germanium in a metallic case

⇒ The minimum gate current which can turn on SCR is called :

trigger current

holding current

junction current

breakover current

⇒ When a 1 V increase in gate voltage changes the drain current 10 mA in an FET, its

*g*

_{m}equals

10 μμ

100 μμ

1000 μμ

10000 μμ

⇒ In the given figure the E and H lines in a coaxial c

The radial lines are E lines and circular lines are H lines

Radial lines are H lines and circular lines are E lines

The directions of E and H lines are wrong

Radial lines may be E and H lines depending an direction of current

⇒ Transformer coupling in transistor amplifier circuits provides high efficiency, because

d.c. resistance is low

collector voltage is stepped up

flux linkages are incomplete

all of the above

⇒ If F

_{n}represents Fourier series coefficient of

*f*(

*t*), then Fourier series coefficient of f(

*t*+

*t*) =

F

_{n}

*e*

^{-jω}

_{0}

^{t}

F

_{n}

*e*

^{jω}

_{0}

^{t}

F

_{n}

*e*

^{jnω}

_{0}

^{t}

F

_{n}

*e*

^{-jnω}

_{0}

^{t}

⇒ Metals approach superconductivity conditions

near absolute zero temperature

near critical temperature

at triple point

under the conditions of high temperature and pressure

⇒ In the circuit, shown in figure, V

_{0}= V

_{i}. The values of 1,

*m*,

*n*are: (

*x*represents don't care conditi

0, 1, 1

∞, x, x

x, ∞, x

0, x, ∞

⇒ In a RS flip-flop no change occurs during

prohibited mode

set mode

reset mode

disable mode

⇒ The opposition of an inductor to current flow

depends only on the resistance of the coil

depends on the magnitude of the applied voltage

varies directly with frequency

varies inversely with frequency

⇒ For a delayed half wave rectified wave, the average and rms values are lower than those for half wave.

TRUE

FALSE

⇒

Match the following:

List I | List II | ||
---|---|---|---|

A. | FM | 1. | slope-overload |

B. | DM | 2. | μ law |

C. | PSK | 3. | Envelope detector |

D. | PCM | 4. | Capture effect |

5. | Hilbert transform | ||

6. | Matched filter. |

A-5, B-1, C-6, D-4

A-4, B-6, C-1, D-5

A-4, B-1, C-6, D-2

A-6, B-3, C-4, D-2