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 half wave diode rectifier uses a diode having forward resistance of 50 ohms. The load resistance is also 50 ohms. Then the voltage regulation is |

A. | 0.2 [Wrong Answer] |

B. | 0.5 [Wrong Answer] |

C. | 1 [Correct Answer] |

D. | 2 [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss 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 a discharging R-L circuit voltage across the resistor exhibits

a linear rise

a linear decay

an exponential growth function

an exponential decay function

⇒ Precisely 1 K byte means

1000 bits

1012 bits

1020bits

1024 bits

⇒ Which of the following theorems can be conveniently used to find power consumed in 10 Ω resistor in fig

Thevenin theorem

Maximum power transfer theorem

Millman's theorem

Superposition theorem

⇒ In a 3 phase system, the zero sequence component of line to line voltages is zero

if line to line voltages are balanced

if line to line voltages are unbalanced

if line to line voltages are balanced or unbalanced

if degree of unbalanced in line to line voltages is small

⇒ A thyristor has internal power dissipation of 40W and is operated at an ambient temperature of 20°C. If thermal resistance is 1.6° C/W, the junction temperature is

114°C

164°C

94° C

84° C

⇒ To multiply a number by 8 in 8085 we have to use

`RAL`

instructiononce

twice

thrice

four times

⇒ In amplifiers, the parasitic oscillation result due to

transistor inter junction capacitance

push pull operator

negative feedback

poor inter-stage coupling

⇒ For the two ports in figure,

*y*

_{11}= 8 mho,

*y*

_{12}=

*y*

_{21}= -6 mho and

*y*

_{22}= 6 mho. The values of Y

_{A}, Y

_{B}, Y

_{C}respectively

2, 6, 6 mho

2, 6, 0 mho

2, 0, 6 mho

2, 6, 8 mho

⇒ Which of the following is very useful as multiband HF receiving antenna?

Square loop

Conical horn

Folded dipole

Log-periodic

⇒ If

*e*= 110 sin (ω

*t*+ p/3) and

*i*= 5 sin (ω

*t*- p/3), the impedance of the circuit is

22 Ω

16 Ω

30.8 Ω

11 Ω

⇒ In 8085 microprocessor with memory mapped I/O which of the following is true?

I/O devices have 16 bit addresses

I/O devices are accessed during IN and OUT instructions

There can be a maximum of 256 input and 256 output devices

Logic operations can not be performed

⇒ The circuit given below

Band stop filter

Band pass filter

Oscillator circuit

All pass filter

⇒ In asynchronous TDM, for

*n*signal sources, each frame contains

*m*slots, where

*m*is usually

Less than

*n*

2

*n*

*n*

greater than 2

*n*

⇒ A 400 W carrier is amplitude modulated with

*m*= 0.75. The total power in AM is

400 W

512 W

588 W

650 W

⇒ The boolean expression for shaded area in the given figur

AB + AC

ABC + ABC

ABC + ABC

None of these

⇒ If σ standard deviation, probable error

σ

± 1.19 σ

± 0.6745 σ

± 0.4125 σ

⇒ A XOR gate has inputs A and B and output Y. Then the output equation is

Y = AB

Y = AB + A B

Y = A B + A B

Y = A B + A B

⇒ High speed logic circuits use

pulses with very small width

pulses with very large width

pulses whose width is neither small nor large

either (b) or (c)

⇒ In the circuit shown below, the outputs Y

_{1}and Y

_{2}for the given initial condition Y

_{1}= Y

_{2}= 1 and after four input pulses wil

Y

_{1}= 1, Y

_{2}= 0

Y

_{1}= 0, Y

_{2}= 0

Y

_{1}= 0, Y

_{2}= 1

Y

_{1}= 1, Y

_{2}= 1

⇒

**Assertion (A):** Transient analysis uses Laplace transformation.

**Reason (R):** Laplace transform method is suitable for solution of integro differential equations.

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

⇒ The number of essential prime implicant for the logic express

3

5

4

6

⇒

Match the following:

List I (Bit Pattern) | List II (Register pairs) | ||
---|---|---|---|

A. | 00 | 1. | SP |

B. | 01 | 2. | B-C |

C. | 10 | 3. | D-E |

D. | 11 | 4. | H-L |

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

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

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

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

⇒ The capacitor filter provides poor voltage regulation because

the increase in ripple with load current causes a decrease in average voltage

the increase in ripple with load current causes a increase in average voltage

filter promotes ripple at peak voltage

none of the above

⇒ A presettable counter with 4 flip flops can start counting from

0

1000

any number from 0000 to 1000

any number from 0000 to 1111

⇒ In the graphical analysis of CE amplifier circuit, the intersection of base current and dc load line is called

saturation point

cut off point

Q point

operating point

⇒ Class C operation finds application in

RF power amplifiers

frequency multipliers

both (a) and (b)

neither (a) nor (b)

⇒ The circumference of an electron orbit is equal to integer times the wavelength of electron.

TRUE

FALSE

⇒ Which device can detect the presence of both forward and backward waves in a waveguide?

Filter

Detector

Directional coupler

Magic T

⇒ Which of the following elements act as donor impurities?

- Gold
- Phosphorus
- Boron
- Antimony
- Arsenic
- Indium

1, 2, 3

1, 2, 4, 6

3, 4, 5, 6

1, 4, 5

⇒ 7483 is a TTL binary adder. It can add

two 4-bit binary numbers

four 6-bit binary numbers

four 8-bit binary numbers

any number of 4-bit numbers