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Q1. | Figure represen |

A. | NPN transistor [Correct Answer] |

B. | PNP transistor [Wrong Answer] |

C. | Zener diode [Wrong Answer] |

D. | Power diode [Wrong Answer] |

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

⇒ In a 3 phase bridge inverter with 120° mode of operation the. number of thyristors conducting at one time are

1

2

3

4

⇒ The current

*i*(

*t*) through a 10 Ω resistor in series with an inductance is given by

*i*(

*t*) = 3 + 4 sin (100

*t*+ 45°) + 4 sin (300

*t*+ 60°) Amperes. The RMS value of the current and the power dissipated in the circuit are

41 A, 410 W respectively

35 A, 350 W respectively

5 A, 250 W respectively

11 A, 1210 W respectively

⇒ 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

⇒ Consider the following digital circu

1 and 2

3 and 4

1, 2 and 3

1, 2, 3 and 4

⇒ For the transport lag G(

*j*ω) =

*e*

^{-jωT}, the magnitude is always equal to

0

1

10

0.5

⇒ Ferroelectric materials are those which

cannot be polarized

have a permanent polarization

have a

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have μ

_{p}= 0

⇒ To turn off an SCR, it is necessary to reduce its current to less than :

trigger current

holding current

breakover current

none of the above

⇒ Double integration of a unit step function would lead to

an impulse

a parabola

a ramp

a doublet

⇒ Consider the following, logic diagr

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0000 to 1001

0000 to 1010

1001 to 0000

⇒ Power monitor and reflectometer use the principle of

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klystron amplifier

Gunn diode

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⇒ In measurements using CRO, Lissajous patterns are used to

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measure frequency

measure impedance

measure current

⇒ A voltage v(

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^{2}is measured by a meter which first square and then reads its dc component. The reading will be

0

4

16

2

⇒ The relation between the apparent power, actual power and reactive power is given by

Apparent power = actual power + reactive power

Apparent power = actual power - reactive power

Apparent power = (actual power)

^{2}- (reactive power)

^{2}

Apparent power = (actual power)

^{2}+ (reactive power)

^{2}

⇒ In which of the following 8085 instructions is the 8 bit number in accumulator adjusted to form two four bit BCD numbers

`DAD `*rp*

`DAA`

`DCX `*rp*

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⇒ A conductor has a cylindrical shape with a diameter

*d*. Its resistance is 2 Ω. It is recast into a cylindrical conductor of diameter 0.3

*d*. The resistance of new conductor is likely to be

less than 2 Ω

less than 0.6 Ω

between 2 and 100 Ω

more than 100 Ω

⇒ A lag compensator is essentially a

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⇒ A sine wave is passed through an amplifier which severely limits it symmetrically. If then passes to a second amplifier which is narrow band and tuned to the frequency of the original sine wave. What will be the output wave from this second amplifier?

A square wave of the same frequency as that of the original sine wave

A square wave of double the frequency of that of original sine wave

A sine wave of constant amplitude at the frequency of the original sine wave

A sine wave of constant amplitude at double frequency of the original sine wave

⇒ The organisatioion of Intel memory chip 127256 is

32 K x 8

16 K x 8

32 K x 4

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⇒ Typical size of digital IC is about

1″ x 1″

2″ x 2″

0.1″ x 0.1″

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⇒ Cassergain feed is used with a parabolic reflector to

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⇒ In a resistance strain gauge, G = 2, stress = 1050 kg/cm

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⇒ The combination of registers in 8085 is B-C, D-E, H-L only.

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⇒

**Assertion (A):** If we overdrive an amplifier the output signal may get clipped

**Reason (R):** To dissipate heat to atmosphere a heat sink is sometimes attached to the case of transistor

Both A and R are correct and R is correct explanation for A

Both A and R are correct but R is not correct explanation for A

A is correct R is wrong

A is wrong R is correct

⇒ The circuit realizes the func

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(A + B) (E + CD)

(A + B) (E + C + D)

(AB + E). CD

⇒ A communication channel with additive white Gaussian noise, has a bandwidth of 4 kHz and an SNR of 15. Its channel capacity is

1.6 kbps

16 kbps

32 kbps

256 kbps

⇒

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

⇒ In a series LCR circuit the maximum inductor voltage is twice the maximum capacitor voltage however current lags by 30° and drop across the inductance is

*v*

*= 100 sin 377*

_{L}*t*V. Assuming the resistance being 20 Ω, Find the values of the capacitance and inductance.

235 μF, 61.18 μH

230 μF, 61.18 μH

61.18 μF, 230 μH

None of the above

⇒ An ac tachometer has a drag cup construction so that

rotor inertia is low

rotor body is conducting

rotor is easy to fabricate

both (a) and (b)

⇒ The amplitude of a random signal uniformly distributed between - 5 V and 5 V. If the positive values of the signal are uniformly quantized with a step size of 0.05 V, and the negative values are uniformly quantized with a step size of 0.10 V, the resulting signal to quantization noise is approximately

46 dB

43.8 dB

42 dB

40 dB

⇒ A non-linear element has zero resistance.

TRUE

FALSE