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. | A transmission line has Z = 300 Ω and _{0}Z_{L} = (300 - j300) ohm. The transmission coefficient is |

A. | 1.265 ∠ - 18.43° [Correct Answer] |

B. | 1.01 ∠ - 10° [Wrong Answer] |

C. | 1.14 ∠ 66.68° [Wrong Answer] |

D. | 1.09 ∠ 66.68° [Wrong Answer] |

View Answer
Explanation:-
Answer : ADiscuss 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 :**

⇒

Match the following:

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

A. | Flash converter ADC | 1. | requires conversion time of a few μs |

B. | Dual slope ADC | 2. | requires DAC |

C. | Successive approximation ADC | 3. | minimizes the effect of power supply interference |

4. | requires complex hardware | ||

5. | is a tracking ADC |

A-2, B-3, C-4

A-4, B-3, C-2

A-5, B-4, C-3

A-1, B-2, C-5

⇒ Two network said to be dual to each other

if mesh equation of one is same to other of node equation

if mesh equation of both is same

if node equation of both is same

neither mesh equation nor node equation is same

⇒ What is the purpose of DMA facility in microprocessor based system?

To increase the speed of data transfer between the mP and the I/O devices

To increase the speed of data transfer between the mP and the memory

To increase the speed of data transfer between the memory and the I/O devices

To improve the reliability of the system

⇒ An input voltage V(

*t*) = 10 2 cos (

*t*+ 10°) + 10 3 cos (2

*t*+ 10°)

*V*is applied to a series combination of resistance R = 1 kΩ inductance L = 1H. The resulting steady-state current

*i*(

*t*) in ampere is

10 cos (

*t*+ 55°) + 10 cos (2

*t*+ 10° tan

^{-1}2)

10 cos (

*t*+ 55°) + 103/2 cos (2

*t*+ 55°)

10 cos (

*t*- 35) + 10 cos (2

*t*+ 10° - tan

^{-1}2)

10 cos (

*t*- 35) + 103/2 cos (2

*t*+ 35°)

⇒ A noiseless 3 KH

*z*channel can transmit binary at the rate __________ .

12000

*bps*

10000

*bps*

6000

*bps*

3000

*bps*

⇒ 7BF

_{16}= __________

_{2}

0111 1011 1110

0111 1011 1111

0111 1011 0111

0111 1011 0011

⇒ An

*n*channel depletion type MOSFET has

lightly doped

*p*substrate and highly doped

*n*source and drain

highly doped

*p*substrate and highly doped

*n*source and drain

highly doped

*p*substrate and lightly doped

*n*source and drain

lightly doped

*n*substrate and highly doped

*n*source and drain

⇒ PCM : Quantising Noise :: Transistor :

Partition noise

Shot noise

Whirl

No noise

⇒ Consider the following applications

- TV tuning
- Active filter
- Microwave frequency multiplication

1 2 and 3

l and 2 only

1 and 3 only

2 and 3 only

⇒ As temperature increases the number of free electrons and holes in an intrinsic semiconductor

increases

decreases

remains the same

may increase or decrease

⇒ For type 1 system the velocity lag error is

inversely proportional to bandwidth of system

directly proportional to gain constant

inversely proportional to gain constant

independent of gain constant

⇒ A 16 bit binary adder has

16 half adders

16 full adders

one half adders and 15 full adders

8 half adders and eight full adders

⇒ In PCM, the information lies

in one or two properties of the pulse

in absence of pulse

in presence of pulse

in presence or absence of pulse

⇒ A voltage of 9 V is applied in forward direction to a semiconductor diode in series with a load resistance of 1000 Ω. The voltage across the load resistance is zero. It indicates that

diode is short circuited

diode is open circuited

resistor is open circuited

diode is either o.c or s.c

⇒ It is required to measure temperature in the range of 1300-1520°C. The most suitable thermocouple is

chromel constantan

iron constantan

chromel aluminium

platinum-rhodium

⇒ (1 2 1)

_{x}= (1 0 0)

_{4}Then

*x*is equal to

2

3

5

does not exist

⇒ Carbon steel has a residual flux density of 1 W

*b*/

*m*

^{2}.

TRUE

FALSE

⇒ Consider a Binary Symmetric Channel (BSC) with probability of error being

*p*. To transmit a bit, say 1, we transmit a sequence of three 1 s. The receiver will interpret the received sequence to represent 1 if at least two bits are 1. The probability that the transmitted bit will be received in error is

*p*

^{3}+ 3

*p*

^{2}(1 -

*p*)

*p*

^{3}

(1 -

*p*)

^{3}

*p*

^{3}+

*p*

^{2}(1 -

*p*)

⇒ If a driving point function N(

*s*) =

*p*(

*s*)/

*q*(

*s*), then

the terms of lowest degree in

*p*(

*s*) and

*q*(

*s*) may differ in degree by zero only

the terms of lowest degree in

*p*(

*s*) and

*q*(

*s*) may differ by one at the most

the terms of lowest degree in

*p*(

*s*) and

*q*(

*s*) may differ in degree by two at the most

the terms of lowest degree in

*p*(

*s*) and

*q*(

*s*) may differ in degree by three at the most

⇒ Permalloy is

a variety of stainless steel

a polymer

a conon-ferrous alloy used in aircraft industry

a nickel an iron alloy having high permeability

⇒ HVDC systems are preferable for only long distances.

TRUE

FALSE

⇒ Consider the following stateme

1, 4 are correct

1 and 2 correct

1, 2, 3 are correct

2, 3, 4 are correct

⇒ In a CE amplifier the input impedance is equal to the ratio of

ac base voltage to ac base current

ac base voltage to ac emitter current

ac emitter voltage to ac collector current

ac collector voltage to ac collector current

⇒ Which of the following is open loop system?

Wind screen wiper

Aqualing

Respiratory system of animal

System for controlling antirocket missiles

⇒ Sweep voltage generators, sweep current generators, multivibrators and blocking oscillators can be combine

negative resistance oscillators

tuned base tuned collector oscillators

relaxation oscillators

L-C tuned oscillators

⇒ The logic circuit in the given figure realizes the func

(A + B + C) (D E)

(A + B + C) (D E)

(A + B + C) (D E)

(A + B + C) (D E)

⇒ The contents of the program counter after the call operation point to the first instruction on

stack

subroutine

either of the above

none of the above

⇒

**Assertion (A):** The steady state response, of a stable, linear, time invariant system, to sinusoidal input depends on initial conditions.

**Reason (R):** Frequency response, in steady state, is obtained by replacing *s* in the transfer function by *j*ω

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

R is correct but A is wrong

⇒ In one time constant, the current in a circuit reaches __________ percent of its final value.

10

37

63

85

⇒ If transmitted power is 75 kW, the field strength at 30 km distance will be about

10 V/m

1 V/m

50 mV/m

2 mV/m