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Q1. | Which of these has peak and valley points in v-i curve? |

A. | Tunnel diode [Correct Answer] |

B. | Zener diode [Wrong Answer] |

C. | PIN diode [Wrong Answer] |

D. | Schottky diode [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 :**

⇒ A choke coil of resistance R and inductance L is shunted by capacitor C. The dynamic resistance is

R/LC

C/RL

L/RC

1/RLC

⇒ In single tone AM modulation, the transmission efficiency for

*m*= 1 is

0.333

0.5

1

0.1665

⇒ In a reactance function

all poles are simple

all poles and zeros are simple

all poles and zeros are simple and lie on

*j*ω axis only

all poles and zeros lie on negative real axis

⇒ The statement

`IMPLICIT INTEGER (A - F)`

in FORTRAN identifiesall variable names which begin with A, B, C, D, E or F as being of integer type

all character names which begin with A, B, C, D, E, or F as being of integer type

all variable names which begin with A and have 6 characters

none of the above

⇒ A rectangular wave guide is designed to propagate at the dominant mode TE

_{10}at a frequency of 5 GHz. The cut-off frequency is 0.8 of signal frequency. The ratio of the guide width to height is 2. The dimensions of the guide are

3.75 cm, 1.875 cm

4 cm, 2 cm

8 cm, 4 cm

2.54 cm, 1.27 cm

⇒ The terminals of a power MOSFET are called

emitter, base, collector

source, gate, drain

source, base, drain

emitter, gate, drain

⇒ In a 100% amplitude modulated signal, the power in the upper sideband when carrier power is to be 100 W and modulation system SSBSC, is

100 W

66 W

50 W

25 W

⇒ For the shaded area in Venn diagram of the given figure, the Boolean expressio

AB + BC + CA

ABC + A B C

ABC + A B C

ABC+AB

⇒ As EM waves travel in free space they get

reflected

refracted

attenuated

absorbed

⇒ A voltage doubler circuit uses

two diodes

two capacitors

two diodes and two capacitors

none of the above

⇒ An atom of a rare gas is placed is an electric field E. Then

the nucleus will be shifted in the direction of E by an amount which is proportional to E.

the nucleus will not be shifted.

the nucleus will be shifted in the direction of E by an amount which is independent of E.

the nucleus will be shifted in a direction opposite to that of E.

⇒ Consider the circuit shown below of 2 : 1 MUX is given by the function

*g*=

*ac*+

*bc*

X ⊕ Y

XY + EXY

XE + XY

none of these

X ⊕ Y

XY + EXY

XE + XY

none of these

⇒ In figure, V

⇒ Which of the following is used in temperature alarm circuits?

Thermistor

Photoconductor

Transistor

Varistor

⇒ A capacitor stores 0.15C at 5 V. Its capacitance is

0.75 F

0.75 μF

0.03 F

0.03 μF

⇒ In a colour TV receiver, AGC adjusts the gain of

RF stage only

IF stage only

RF stage and one or two IF stages

none of the above

⇒

A-3, B-2, C-1

A-3, B-1, C-2

A-2, B-4, C-1

A-4, B-2, C-3

⇒ Consider the instructions

1, 2, 3

1 and 2 only

1 and 3 only

2 and 3 only

⇒ In 2's complement representation the number 11100101 represents the decimal number

37

-31

27

-27

⇒ Consider a system whose input

Causal, LP

BIBO, LTI

BIBO, Causal, LTI

LP, LTI

⇒ The control logic for a binary multiplier is specified by a states diagram. The state diagram has four states and two inputs. To implement it by the sequence register and decoder method.

two flip-flop & 2 x 4 decoder are needed

four flip-flop & 2 x 4 decoder are needed

two flip-flop & 3 x 9 decoder are needed

four flip-flop & 3 x 9 decoder are needed

⇒ A wire is carrying current

is directed towards wire

is directed away from wire

is tangential every where to a circle of radius

none of the above

⇒ When a dc chopper feeds an RLE load, the load current, during steady state operation

remains constant

varies between maximum and minimum values

may remain constant or vary

is constant if R is constant

⇒ Microprocessor 8088 has

16 bit registers and 16 bit data bus

8 bit registers and 8 bit data bus

8 bit registers and 16 bit data bus

16 bit registers and 8 bit data bus

⇒ The circuit shown depic

voltage series negative feedback

voltage shunt negative feedback

current series negative feedback

current shunt negative feedback

⇒ A half adder adds

2 bits

3 bits

4 bits

2 or 3 bits

⇒ If the value of C

quadrupled

doubled

unchanged

halved

⇒ Consider the following statements:

1, 2 and 3

1 and 2 only

1 and 3 only

2 and 3 only

⇒ Transverse magnetic (TM) waves have

magnetic field component H in the direction of propagation

electric field component E in the direction of propagation

magnetic field component H in the direction of propagation and no component of electric field E in this direction

electric field component E in the direction of propagation and no component of magnetic field H in this direction

⇒ 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

⇒ In figure, V

_{0-1 V2 V+1 V+15 V}⇒ Which of the following is used in temperature alarm circuits?

Thermistor

Photoconductor

Transistor

Varistor

⇒ A capacitor stores 0.15C at 5 V. Its capacitance is

0.75 F

0.75 μF

0.03 F

0.03 μF

⇒ In a colour TV receiver, AGC adjusts the gain of

RF stage only

IF stage only

RF stage and one or two IF stages

none of the above

⇒

Match the following:

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

A. | Interface | 1. | A measure of rate of data transmission |

B. | A bit | 2. | A binary digit |

C. | Band speed | 3. | The common boundary between various sections and subsections |

4. | A/D converter |

A-3, B-2, C-1

A-3, B-1, C-2

A-2, B-4, C-1

A-4, B-2, C-3

⇒ Consider the instructions

- MOV M, B
- OUT 4
- LDAX

Which of the above require memory write cycle?1, 2, 3

1 and 2 only

1 and 3 only

2 and 3 only

⇒ In 2's complement representation the number 11100101 represents the decimal number

37

-31

27

-27

⇒ Consider a system whose input

*x*and output*y*are related by the equaCausal, LP

BIBO, LTI

BIBO, Causal, LTI

LP, LTI

⇒ The control logic for a binary multiplier is specified by a states diagram. The state diagram has four states and two inputs. To implement it by the sequence register and decoder method.

two flip-flop & 2 x 4 decoder are needed

four flip-flop & 2 x 4 decoder are needed

two flip-flop & 3 x 9 decoder are needed

four flip-flop & 3 x 9 decoder are needed

⇒ A wire is carrying current

*I*. The field intensity H at a distance*r*from the wireis directed towards wire

is directed away from wire

is tangential every where to a circle of radius

*r*none of the above

⇒ When a dc chopper feeds an RLE load, the load current, during steady state operation

remains constant

varies between maximum and minimum values

may remain constant or vary

is constant if R is constant

⇒ Microprocessor 8088 has

16 bit registers and 16 bit data bus

8 bit registers and 8 bit data bus

8 bit registers and 16 bit data bus

16 bit registers and 8 bit data bus

⇒ The circuit shown depic

voltage series negative feedback

voltage shunt negative feedback

current series negative feedback

current shunt negative feedback

⇒ A half adder adds

2 bits

3 bits

4 bits

2 or 3 bits

⇒ If the value of C

_{2}and C_{3}are doubled, the oscillation frequency will bequadrupled

doubled

unchanged

halved

⇒ 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

⇒ Transverse magnetic (TM) waves have

magnetic field component H in the direction of propagation

electric field component E in the direction of propagation

magnetic field component H in the direction of propagation and no component of electric field E in this direction

electric field component E in the direction of propagation and no component of magnetic field H in this direction

⇒ 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