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 varactor diode is |

A. | reverse biased [Correct Answer] |

B. | forward biased [Wrong Answer] |

C. | biased to breakdown [Wrong Answer] |

D. | unbiased [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 :**

⇒ The circuit of figur

clipper, sine wave clipped at - 2 V

clamper

clamper, sine wave clamped at zero V

clipper, sine wave clipped at + 2 V

⇒ A 37 bit mantissa has an accuracy of

6 decimal places

8 decimal places

10 decimal places

11 decimal places

⇒ For a junction FET in the pinch off region, as the drain voltage is increased, the drain current

becomes zero

abruptly decrease

abruptly increases

remains constant

⇒ A rhombic antenna is a

resonant antenna

non-resonant antenna

coupled antenna

none of the above

⇒ A reflex klystron oscillator uses

one cavity resonator

two cavity resonators

three cavity resonators

none of the above

⇒ In carbon resistor colour code, the fourth band indicates tolerance.

TRUE

FALSE

⇒

Match the following:

List I (Application of circuit) | List II (Circuit Name) | ||
---|---|---|---|

A. | Divider | 1. | Astable multivibrator |

B. | Clips input voltage at two predetermined levels | 2. | Schmitt trigger |

C. | Square wave generator | 3. | Bistable multivibrator |

D. | Narrow current pulse generator |

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

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

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

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

⇒ The first and the last critical frequency of an

*RC*driving point impedance function must respectively by

a zero and a pole

a zero and a zero

a pole and a pole

a pole and a zero

⇒

**Assertion (A):** Charge is dual of flux.

**Reason (R):** Short circuit is dual of open circuit.

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 real variable names is not valid in Fortran?

BETA

ALPHA

A

AB * 2

⇒ A voltage v = 5 + 50 sin ω

*t*/ + 5 sin 5 &omega

*t*is applied to a pure capacitor of capacitance 1 ωF. If

*f*/= 314 rad/sec, current is

1 + 0.0157 cos 314

*t*+ 0.00785 cos 1570

*t*

0.0157 cos 314

*t*+ 0.00785 cos 1570 t

0.0157 sin 314

*t*+ 0.00785 sin 1570

*t*

0.0157 sin (314

*t*/ + 45°) + 0.00785 sin (1570

*t*+ 45°)

⇒ Which of the following antennas is circularly polarized?

Yagi-Uda

Parabolic reflector

Small circular loop

Helical

⇒ In a vacuum tube, the transit time of electron between cathode and anode is important at

low frequencies

high frequencies

both (a) and (b)

frequencies which are neither very low nor very high

⇒ In a 7 segment LED display, the minimum number of segments is activated when the input decimal number is

0

1

2

3

⇒ EEPROM permits

read operation only

read and byte erase operations

read, byte erase and byte write operations

read, byte erase, byte write and chip erase operations

⇒ In case of photo conductor for germanium when forbidden energy gap is 0.72 eV, the critical wavelength for intrinsic excitation will be

1.43 m

1.43 mm

1.73 mm

1.73 x 10

^{12}m

⇒ If figure, I = 2A if R = 20 Ω. When R = 10 Ω current I

0.0416666666666667

0.0833333333333333

2.5 A

0.125

⇒ In the given figure 15.6 shows a series, R - C circuit fed by a current source

*i*(

*t*). There is an initial voltage

*v*

_{0}. across the capacitor. The sy

is linear

is non linear

may be linear or non linear

is linear only if

*v*

_{0}is zero

⇒ An increase in temperature increases the width of depletion layer.

TRUE

FALSE

⇒ By placing an inverter between both inputs of an S-R flip-flop, the resulting flip-flop becomes

J-K flip-flop

D-flip-flop

T-flip-flop

Master salve JK flip-flop

⇒ The magnetic quantum number determines the component of angular momentum along a prescribed direction.

TRUE

FALSE

⇒ The output of a linear system for any input can be computed in which of the following ways?

Only by summation of inpulse response by convolution integral

Only by summation of step response by superposition integral

Neither a nor b

Either (a) or (b)

⇒ A full adder has two outputs SUM and CARRY.

TRUE

FALSE

⇒ A function Z(

*s*) has zero at infinity if

the degree of numerator and denominator are equal

the numerator of Z(

*s*) is one degree higher than denominator

the denominator of Z(

*s*) is one degree higher than numerator

the degree of numerator and denominator are either equal or differ by one

⇒ The open wired circuit in the given figure works

EX - NOR gate

AND gate

XOR gate

NOR gate

⇒ DeMorgan's first theorem shows the equivalence of

OR gate and Exclusive OR gate

NOR gate and Bubbled AND gate

NOR gate and NAND gate

NAND gate and NOT gate

⇒

**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

⇒ A

*n*-port network is said to be active if power in the ckt is __________ .

P > 0

P < 0

P = 0

P = ∞

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

Square loop

Conical horn

Folded dipole

Log-periodic

⇒ In the following non-planar graph no.of independent loop equations

8

12

7

5