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Q1. | A square in which each (i, j)^{th} element of matrix is equal to the negative of the conjugate complex of (j, i)^{th} element, is called |

A. | Hermitian matrix [Wrong Answer] |

B. | Skew symmetric matrix [Wrong Answer] |

C. | Conjugate anti-symmetric matrix [Wrong Answer] |

D. | Skew-Hermitian matrix [Correct Answer] |

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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 :**

⇒ An ammeter has a resistance of 50 ohms and a shunt of 0.01 Ω. The deflection is θ. If the shunt resistance is increased to 0.02 Ω, the deflection will be.

θ

2θ

0.5θ

0.25θ

⇒ A combination circuit is one in which the output depends on

input combination at that time

input combination and previous output

input combination and previous input

present output and previous output

⇒ Two voltages 50 V each have a phase difference of 45°. The rms value of resultant sum of the two voltages is

70.7 V

80.4 V

92.4 V

100 V

⇒ The magnetic moment in units of Bohr magneton of a ferrous ion in any ferrite is

zero

2

4

6

⇒

**Assertion (A):** CMOS devices have very high speed.

**Reason (R):** CMOS devices have very small physical size and simple geometry.

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

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

A is true, R is false

A is false, R is true

⇒ An arbitrary signal

*m (t)*has zero average value and it is bandlimited to 3.2 kHz. It is sampled at the rate of 8 K samples/S. The samples are passed through an ideal bandpass filter with centre frequency of 32 kHz and bandwidth of 6.4 kHz. The output of band pass filter is

AM-DSB signal with suppressed carrier

AM-DSB signal with carrier

AM-SSB signal with carrier

a sequence of exponentially decaying sine waves

⇒ For the binary number 11101000, the equivalent hexadecimal number is

F 9

F 8

E 9

E 8

⇒ A divide by 78 counters can be realized by using

six mod-13 counters

thirteen mod-6 counters

one mod 13 counter followed by one mod-6 counter

thirteen mod-13 counters

⇒ Which one of following is correct condition to check the stability of sysytem in terms of impulse response?

Σ(

*x*(

*n*)) < ∞

Σ

*x*(

*n*) < 0

Σ

*x*(

*n*) = 0

Σ

*x*(

*n*) = ∞

⇒

Match the following:

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

A. | Darlington amplifier | 1. | A circuit using pnp and npn transistors |

B. | CB amplifier | 2. | A CS amplifier driving a CG amplifier |

C. | Cascade amplifier | 3. | A circuit with over-all voltage gain close to 1 and very large input impedance |

D. | Complementary symmetry amplifier | 4. | A circuit with low input impedance |

A-1, B-2, C-3, D-4

A-2, B-1, C-3, D-4

A-3, B-4, C-2, D-1

A-4, B-3, C-2, D-1

⇒ A reflex klystron oscillator uses

one cavity resonator

two cavity resonators

three cavity resonators

none of the above

⇒ In figure, I

_{D}= 4 mA. Then V

_{DS20 V16 V4 V0.4 V}

⇒ A counter has a modulus of 10. The number of flip flops is

10

5

4

3

⇒ The static electric field in a conductor is

zero

unity

infinity

none of the above

⇒ The diameter of an atom is

10

^{-6}metre

10

^{-10}metre

10

^{-15}metre

10

^{-21}metre

⇒ A cable has an insulation resistance of 10

^{10}ohms. If the length is doubled, the insulation resistance will be

2 x 10

^{10}Ω

0.5 x 10

^{10}Ω

10

^{10}Ω

4 x 10

^{10}Ω

⇒

Match the following:

List I (VCR system) | List II (Azimuth angle) | ||
---|---|---|---|

A. | VHS | 1. | 7° |

B. | Video 2000 | 2. | 15° |

C. | Betamax | 3. | 6° |

A-1, B-2, C-3

A-1, B-3, C-2

A-3, B-1, C-2

A-3, B-2, C-1

⇒ An amplifier has to amplify pulses of 1 H-s duration. The minimum bandwidth of amplifier must be

10 kHz

10 MHz

1 kHz

1 MHz

⇒ Consider the following statements about data structures in Pascal

- Arrays and files are types of data structures.
- List structure is not a data structure in Pascal.
- Each element of a binary tree is called a node of the tree.

All

1, and 2 only

1 and 3 only

2 and 3 only

⇒ The current through a PN Junction diode with

*v*volts applied to the P region to the N region, where (I

_{0}is the reverse saturation current to the diode,

*m*the ideality factor,

*k*the Boltzmann constant, T the absolute temperature and

*q*the magnitude of charge on an electron) is

I

_{0}(

*e*

^{-qv/mkT}- 1)

I

_{0}

*e*

^{-qv/mkT}

I

_{0}(1 -

*e*

^{qv/mkT})

I

_{0}(

*e*

^{qv/mkT}- 1)

⇒ With negative feedback the closed loop gain is always less than open loop gain.

TRUE

FALSE

⇒ In cell communication

carrier frequency change

carrier frequency constant

depend upon location

depend upon geographical area

⇒

**Assertion (A):** A presettable counter can be preset to any desired starting point

**Reason (R):** The maximum frequency of a ripple counter depends on the modulus.

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

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

A is true, R is false

A is false, R is true

⇒

Match the following:

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

A. | TV | 1. | 1 kHz |

B. | Radio | 2. | 3 kHz |

C. | Telephony | 3. | 9 kHz |

D. | Telegraphy | 4. | 5 MHz |

A-4, B-1, C-2

A-4, B-3, C-2

A-2, B-1, C-3

A-1, B-2, C-3

⇒ The voltage in a circuit follows the law

*v*= 100 sin ω

*t*if the frequency is 25 Hz, how long will it take for the voltage to rise to 50 volts?

1/150

*s*

1/100

*s*

1/300

*s*

1/600

*s*

⇒ In op-amp integrating amplifier the input is feed to

inverting input

non-inverting input

both inverting and non-inverting input

either inverting or non-inverting input

⇒ In figure, transistor β

_{dc}= 100 and LED voltage when it is conducting is 2 V. Then the base current which saturates the transisto

18 mA

1.8 mA

0.18 mA

0.018 mA

⇒ Which one is time invariant system?

*y*[

*n*] =

*x*[2

*n*]

*y*[

*n*] =

*x*[

*n*]

*x*[

*n*- 1]

*y*[

*n*] =

*x*[

*n*/2]

all

⇒ Substitution theorem applies to

Linear network

Non linear network

Linear time invariant network

Any network

⇒ The circuit in figure will act as ideal current source with respect to terminals A and B when frequenc

0

1 rad/sec

4 rad/sec

16 rad/sec