Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | For good quality signal transmission all frequency components should have the same transmission delay, t and same phase shift-Φ_{d}_{s}. What can be said about the statement? |

A. | Correct [Wrong Answer] |

B. | True from t but not for Φs [Wrong Answer]_{d} |

C. | Not true for t but true for Φ_{d}_{s} [Wrong Answer] |

D. | Both t and Φ_{d}_{s} are not involved in quality [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 :**

⇒ In an ordinary thyristor

turn on and turn off times are equal

turn on time is more than turn off time

turn off time is more than turn on time

turn on time may be equal, less than or more than turn off time

⇒

Match the following:

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

A. | R = 0 | 1. | Undamped oscillation |

B. | R < 2 L/C | 2. | Damped oscillation |

C. | R = 2 L/C | 3. | Critically damped response |

D. | R > 2 L/C | 4. | Non-oscillatory response. |

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

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

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

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

⇒ The number of protons in a silicon atom are

4

8

12

14

⇒ Which has volatile memory?

Magnetic tape

RAM

Diskette

Hard disk

⇒ The total number of leads in reverse conducting thyristor is

2

3

1

4

⇒ A full adder is to be implemented using half adders and OR gates. A 4 bit parallel adder without any initial carry requires

8 half adders and 4 OR gates

8 half adders and 3 OR gates

7 half adders and 3 OR gates

7 half adders and 4 OR gates

⇒ For an n-channel JEFT having drain source voltage constant if the gate source voltage is increased (more negative) pinch off would occur for

high values of drain current

saturation values of drain current

zero drain current

gate current equal to the drain current

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

TRUE

FALSE

⇒ Figure shows a NAND latch used as a switch debouncer. With the switch in STOP position. Q will be equal to

0

1

CLK

none of these

⇒ In free space, line of sight propagation case, the transmission losses between transmitter and receiver increase with frequency (

*f*) as

*f*

*f*

^{2}

*f*

^{4}

*f*

^{1/2}

⇒ In full wave rectification, if the input frequency is 50 Hz, then frequency at the output of filter is

50 Hz

0 Hz

100 Hz

75 Hz

⇒ An R-C coupled amplifier has mid-frequency gain of 200 and a frequency response from 100 Hz to 20 kHz. A negative feedback network with β = 0.2 is incorporated into the amplifier circuit, the Bandwidth will be

50 kHz

20 kHz

100 kHz

infinite

⇒ The number of roots of

*s*

^{3}+ 2

*s*

^{2}+ 7

*s*+ 3 = 0 in the left half of the s-plane is :

zero

one

two

three

⇒

**Assertion (A):** Bolometer is frequently used in microwave power measurement.

**Reason (R):** In a bolometer the input microwave power causes a change in resistance.

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 correct but R is wrong

A is wrong but R is correct

⇒ An RLC series circuit is underdamped. To make it overdamped, the value of R

has to be increased

has to be decreased

has to be increased to infinity

has to be reduced to zero

⇒ In the circuit of figure β = 100 and quiescent value of base current is 20 μA. The quiescent value of colle

0.2 μA

2 μA

2 mA

20 mA

⇒ In the op-amp circuit of figure, V

_{03 V1 - 4 V2-3 V1 + 4 V23(V1 - V2)-3(V1 - V2)}

⇒ The minimum sampling frequency in sample/sec. required to reconstruct the following signal from its samples wuthout distor

2 x 10

^{3}

4 x 10

^{3}

6 x 10

^{3}

8 x 10

^{3}

⇒ Consider the following statements:

- If any root of characteristic equation has a positive real part the impulse response is unbounded and system is unstable.
- If all the roots of a characteristic equation have negative real parts, the impulse response decays to zero.
- If one or more non-repeated roots of characteristic equation are on
*j*ω axis impulse response is bounded but the system is unstable.

1, 2 and 3

1 and 2 only

1 and 3 only

2 and 3 only

⇒ Coaxial cables can be used for which frequency?

15 kHz

10 MHz

200 MHz

2000 MHz

⇒ In which computer language is 'break' statement used

Fortran 77

Pascal

C

none of the above

⇒ The accumulator drives the ALU.

TRUE

FALSE

⇒ An R-L circuit has an initial current of 5 A. In the

*s*-domain equivalent circuit, the voltage source to take into account the initial current has a strength of

5L volts

5/L volts

5L

^{2}volts

5/L

^{2}volts

⇒ Consider the following statements regarding registers and latches:

- Registers are made of edge-triggered FFs, whereas latches are made from level-triggered FFs.
- Registers are temporary storage devices whereas latches are not.
- A latch employs cross-coupled feedback connections.
- A register stores a binary word whereas a latch does not.

1 only

1 and 3

2 and 3

3 and 4

⇒ Which two rows represent identical binary numbers?

A second and fourth

Fifth and eight

Third and seventh

Second and third

⇒ In a pulsed RADAR typical value of pulse duration and pulse frequency respectively are

1 μs and 50 Hz

1 μs and 500 Hz

4 μs and 50 Hz

4 μs and 500 Hz

⇒

Match the following:

List I (Devices) | List II (characteristic) | ||
---|---|---|---|

A. | BJT | 1. | Voltage controlled negative resistance |

B. | MOSFET | 2. | High current gain |

C. | Tunnel diode | 3. | Voltage regulation |

D. | Zener diode | 4. | High input impedance |

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

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

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

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

⇒ The emitter coupled pair of BJT's gives a linear transfer relation between the differential output voltage and the differential input voltage V

_{id}only when the magnitude of V

_{id}is less a times the thermal voltage, where a is

4

3

2

1

⇒

Match the following:

List I (Operator) | List II (Description) | ||
---|---|---|---|

A. | & & | 1. | Bitwise inclusive OR |

B. | & | 2. | Bitwise AND |

C. | | | | 3. | Logical AND |

D. | | | 4. | Logical OR |

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

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

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

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

⇒ Ferrite have

low copper loss

low eddy current loss

low resistivity

higher specific gravity compared to iron