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Q1. | A P-N junction offers |

A. | high resistance in forward as well as reverse direction [Wrong Answer] |

B. | low resistance in forward as well as reverse direction [Wrong Answer] |

C. | conducts in forward direction only [Correct Answer] |

D. | conducts in reverse direction only [Wrong Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ The process of deliberately adding impurity to a semi-conductor material is called

impurification

pollution

deionisation

doping

⇒ In a BJT circuit a

*pnp*transistor is replaced by

*npn*transistor. To analyse the new circuit

all calculations done earlier have to be repeated

replace all calculated voltages by reverse values

replace all calculated currents by reverse values

replace all calculated voltages and currents by reverse values

⇒ The dead zone in a pyrometer is 0.125% of span. The calibration is 400°C to 1000°C. What temperature change might occur before it is detected.

0.125°C

0.75°C

0.4°C

1°C

⇒ For parallel RLC circuit, which one of the following statements is NOT correct?

The bandwidth of the circuit deceases if R is increased

The bandwidth of the circuit remains same if L is increased

At resonance, input impedance is a real quantity

At resonance, the magnitude of input impedance attains its minimum value

⇒ For maximum transfer of power, internal resistance of the source should be

equal to load resistance

less than the load resistance

greater than the load resistance

none of the above

⇒ Which one of the following is an indirect way of generating FM?

Armstrong modulator

Varactor diode modulator

Reactance FET modulator

Reactance bipolar transistor modulator

⇒ In a ripple counter,

whenever a flip flop sets to 1, the next higher FF toggles

whenever a flip flop sets to 0, the next higher FF remains unchanged

whenever a flip flop sets to 1, the next higher FF faces race condition

whenever a flip flop sets to 0, the next higher FF faces race condition

⇒ In figure, the current

0.0416666666666667

0.0833333333333333

0.166666666666667

0.333333333333333

⇒

Match the following:

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

A. | C | 1. | 7 eV |

B. | Si | 2. | 1.15 eV |

C. | Ge | 3. | 0.75 eV |

D. | Sn | 4. | 0.1 eV |

E. | Pb | 5. | 0 eV |

A-2, B-3, C-4, D-5, E-1

A-1, B-2, C-3, D-4, E-5

A-3, B-1, C-2, D-5, E-4

A-4, B-5, C-1, D-2, E-3

⇒ Figure repres

Integrator

Differentiator

High Pass Filter

Band Pass Filter

⇒ Some typical examples of macroscopic quantities are

conductivity

µ

_{r}

dielectric constant

all of the above

⇒ 1274

_{16}- 3A7

_{16}= __________ .

ACA

_{16}

ACB

_{16}

ECD

_{16}

AAA

_{16}

⇒ Compared to a

*p-n*junction with N

_{A}= N

_{D}= 10

^{14}/cm

^{3}, which one of the following statements is TRUE for a

*p-n*junction with N

_{A}= N

_{D}= 10

^{20}/cm

^{3}?

Reverse breakdown voltage is lower and depletion capacitance is lower

Reverse breakdown voltage is higher and depletion capacitance is lower

Reverse breakdown voltage is lower and depletion capacitance is higher

Reverse breakdown voltage is higher and depletion capacitance is higher

⇒ The circuit of figure is ca

current mirror

voltage mirror

impedance inversion

phase splitting

⇒ 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

⇒ SSB can be generated by

filter method

phase shift method

weaver's method

none of the above

⇒ Which of the following identifiers is valid in Pascal?

`THETA`

`NUM `

`1 ST`

`$ BETA`

⇒ If sampling is done at the rate of 10 kHz. The bandwidth required is

35 kHz

70 kHz

10 kHz

1280 kHz

⇒ The counter in the given figur

Mod 3

Mod 6

Mod 8

Mod 7

⇒ In a number system with radix

*r*, the decimal value of 110 is equal to 4

*r*. The decimal values of 111 and

*r*respective are equal to

20, 5

16, 4

13, 3

8, 2

⇒ Television signals are propagated as ground waves.

TRUE

FALSE

⇒ A 37 bit mantissa has an accuracy of

6 decimal places

8 decimal places

10 decimal places

11 decimal places

⇒ ∈

_{r}is determined by the atomic structure of the dielectric.

TRUE

FALSE

⇒ To find current in a resistance connected in a network, Thevenin's theorem is used V

_{TH}= 20 V and R

_{TH}= 5 Ω. The current through the resistance

is 4 A

is 4 A or less

is less than 4 A

may be 4 A or less or more than 4 A

⇒ Which one of the following is applicable to any network-linear or non-linear, active or passive, time-varying or invariant - as long as Kirchhoff laws are

*not*violated?

Tellegen's theorem

Reciprocity theorem

Maximum power transfer theorem

Superposition theorem

⇒ Two coils are so wound that 60% of the flux of one links the other. The coefficient of coupling is

1.67

0.6

0.36

0.216

⇒ 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

⇒ An image uses 512 x 512 picture elements. Each element can take any of eight distinguishable levels. The maximum entropy in the above image will be

2097152 bits

786432 bits

648 bits

144 bits

⇒ Two 2 port circuits are connected cascaded. To determine the response, it is more convenient to use

O.C. impedance parameters

S.C. admittance parameters

ABCD parameters

*h*parameters

⇒ For a Hertz dipole antenna, the Half Power Beam Width (HPBW) in the E-plane is

360°

180°

90°

45°