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Q1. | The troposphere extends from earth surface to a height of |

A. | 15 km [Correct Answer] |

B. | 90 km [Wrong Answer] |

C. | 150 km [Wrong Answer] |

D. | 200 km [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. | Silicon | 1. | is trivalent |

B. | Arsenic | 2. | rarely used as semiconductor |

C. | Indium | 3. | is pentavalent |

D. | Germanium | 4. | intrinsic semiconductor |

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

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

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

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

⇒ D/A converters are generally

weighted resistor network

binary ladder network

either (a) or (b)

neither (a) nor (b)

⇒ In a series regulated power supply circuit, the voltage gain A

_{v}, of the 'pass' transistor satisfies the condition

A

_{v}→ ∞

1 << A

_{v}< ∞

A

_{v}≈ 1

A

_{v}<< 1

⇒ For the power amplifier circuit shown below, the maximum power dissipated by both output transisto

9.66 W

30.11 W

31.66 W

33.66 W

⇒ The resistivity of ferrites is

very much lower than that of the ferromagnetic metals

slightly lower than that of the ferromagnetic materials

slightly higher than that of the ferromagnetic metals

very much higher than that of the ferromagnetic metals

⇒ With JFETs cascade means

a common source driving a common gate connection

a common gate driving a common source connection

two FETs connected in parallel

none of the above

⇒ In a full bridge single phase inverter feeding RLC load

one thyristor and one diode conduct simultaneously

two thyristors conduct simultaneously

two thyristors or two diodes conduct simultaneously

four thyristors conduct simultaneously

⇒ In the NMOS inverter

the driver and achieve load are enhancement type

the driver is enhancement type and load depletion type

both driver and load are depletion type

the driver and load are depletion type

⇒ Which of the following is not correct?

P(A) = P(A) - 1

0 ≤ P ≤ 1

If A and B are mitual exclusive then P(A + B) = P(A) + P(B)

P(A) = 1 - P(A)

⇒ How many zone bits are th

2

4

8

16

⇒ In the figure circuit, V

_{1}= 40 V. When R is 10 Ω. When R is zero, the value of V

_{2}wil

40 V

30 V

20 V

10 V

⇒ In a 3 phase bridge inverter, the gating signals for the three phases have a phase difference of

120°

60°

240°

any of the above

⇒ A specimen of a material has a resistivity of 1.78 x 10

^{8}ohm-m. The material is

semiconductor

conductor

semiconductor or conductor

insulator

⇒ In a system an input resistance of 20 kΩ causes a noise voltage of 15μV. If two such input resistances each of 20 kΩ are used in parallel, the total noise voltage will be about

15 μV

30 μV

7.5 μV

10.6 μV

⇒ In the expression

*a*= 5 * 2 / 3.2 + 4 / 8 - 2 + 5 / 9 which operation will have the first priority in C?

5*2

2 / 3.2

5 * 2 / 3.2

42833

⇒ Skip distance depends on time of day and angle of incidence.

TRUE

FALSE

⇒ Which of the following is decimal equivalent of the binary 1111111?

27

87

127

167

⇒ As temperature increases, the temperature coefficient of metals increases.

TRUE

FALSE

⇒ The phase velocity in a coaxial line is

greater than C

equal to C

less than C

not depend on C

⇒ The radix of a hexadecimal system is

2

3

8

16

⇒ Damping ratio =

actual resistance/critical resistance

critical resistance/actual resistance

critical resistance

none of the above

⇒ Diamagnetic materials do not have permanent magnetic dipoles.

TRUE

FALSE

⇒ Which is correct for a vacuum triode?

μ =

*r*

_{p}

*g*

_{m}

*r*

_{p}= μ

*g*

_{m}

*g*

_{m}= μ

*r*

_{p}

*r*

_{p}

*g*

_{m}

⇒ For type 2 system, the magnitude and phase angle of the term (

*j*ω)

^{2}in the denominator, at ω = 0, are respectively

0 and - 90°

0 and + 90°

infinity and - 180°

infinity and + 180°

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

TRUE

FALSE

⇒ Three point tracking is achieved with

double conversion

padder capacitor

double spotting

variable selectivity

⇒ In the dimension statement DIMENSION A (50, 50), K (100, 100) the total number of locations reserved will be

2500

100000

125000

250000

⇒ The collector voltage V

_{C}of the circuit shown in the given figure aside is approxima

2 V

4.6 V

8 V

8.6 V

⇒ The resistance values of a PIN diode under positive bias and negative bias respectively are about

a few ohms and a kilo ohms

about 100 ohms and 1000 ohms

about 0.1 ohm and 100 ohms

about 1000 ohms and 10000 ohms

⇒ Transistor are free from which type of noise?

Resistance noise

Partition noise

Flicker noise

Shot noise