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Q1. | The number of doped regions in a bipolar junction transistor is |

A. | 1 [Wrong Answer] |

B. | 2 [Wrong Answer] |

C. | 3 [Correct Answer] |

D. | 4 [Wrong Answer] |

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

⇒ A photo diode is

forward biased

reverse biased

either forward or reverse biased

unbiased

⇒ The symbol in figure is

SUS

SBS

SCS

None of the above

⇒ If the number of information bits is m, the number of parity bits p in the Hamming code is given by equation

2

^{p}= m + p + 1

2

^{p}≥ m + p + 1

2

^{P}= m + p

2

^{p}≥ m + p

⇒ Consider the following statements regarding registers and latches:

- Registers are made of edge-triggered FFs, whereas latches are made from level-triggered FFs.
- Registers are temporary storage devices whereas latches are not.
- A latch employs cross-coupled feedback connections.
- A register stores a binary word whereas a latch does not.

1 only

1 and 3

2 and 3

3 and 4

⇒ The Laplace transform of impulse δ(

*t*) is

1

1/

*s*

*s*

1/

*s*

^{2}

⇒ In microprocessor 8088

8 data bits are multiplexed with 8 least significant bits of address bus

8 data bits are multiplexed with 8 most significant bits of address bus

16 data bits are multiplexed with 16 bits of address bus

none of the above

⇒ The currents fed to the two dipoles of turnstile antenna are

in phase

in quadrature

in phase opposition

either (a) or (c)

⇒

Match the following:

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

A. | DMA controller | 1. | Interface between computer and video display adapter |

B. | CKT controller | 2. | Used to read data directly from disk into directly memory |

C. | Interrupt controller | 3. | Supervises the operation of control signal |

A-1, B-2, C-3

A-2, B-3, C-1

A-3, B-2, C-1

A-2, B-1, C-3

⇒ The classes of solid dielectrics are

A, B, C, D, E, F, H

A E B F H C D

Y A E B F H C

A E B F H C

⇒ A single phase semiconverter has a freewheeling diode. If the firing angle is a and the load is purely resistive, the periods of conduction and freewheeling respectively are

p - a and 0

p - a and a

p + a and 0

p + a and a

⇒ If the absolute value of a number is less than decimal 1, the sign of exponent in floating point representation is

zero

negative

zero or negative

positive

⇒ F

_{2}layer of atmosphere extends from

250 km to 400 km

150 km to 250 km

50 km to 150 km

15 km to 50 km

⇒

Match the following:

Microwave Measuring Instruments | Measurements Effected | ||
---|---|---|---|

A. | Bolometer | 1. | Reflection coefficients |

B. | VSWR meter | 2. | Half power beam widths |

C. | Cavity wave meter | 3. | Microwave power |

D. | Pattern recorder | 4. | Microwave frequency |

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

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

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

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

⇒

Match the following:

List I (DOS commands) | List II (Meaning) | ||
---|---|---|---|

A. | ATTRIB | 1. | Displays all directories and subdirectories |

B. | SCAN DISK | 2. | Moves files to another director |

C. | MOVE | 3. | Checks the status of disc |

D. | TREE | 4. | Hides a file |

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

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

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

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

⇒ In the graph of figure, the total number of tree

4

5

6

8

⇒ The breakdown voltage in a zener diode

is almost constant

is very small

may destroy the diode

decreases with increase in current

⇒ If a function has only cosine terms, it must satisfy the equation

*f*(

*t*) = -

*f*(

*t*)

*f*(-

*t*) =

*f*(

*t*)

*f*(-

*t*) = -

*f*(

*t*)

none of the above

⇒ ISDN stands for

Integrated Services Digital Network

Inter Services Digital Network

Inter Subscriber Digital Network

integrated Subscriber Digital Network

⇒ 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°)

⇒ Using 2's complement, the largest positive and negative number which can be stored with 8 bits are

+128 and -127

+128 and -128

+127 and -128

+127 and -127

⇒ Which of the following pulse-time modulation is least used?

PDM

PPM

PWM

PAM

⇒

**Assertion (A):** Ideal current sources and ideal voltage sources do not exist in reality.

**Reason (R):** All sources have finite internal impedances.

Both A and R are individually true and R is the correct explanation of A

Both A and R are individually true but R is not the correct explanation of A

A is true but R is false

A is false but R is true

⇒ Unit of e is __________ .

coulomb/newton-metre

coulomb

^{2}/newton-metre

Farad/metre

Farad

^{2}/metre

⇒ An I/O processor control the flow of information between

cache memory and I/O devices

main memory and I/O devices

1 Two I/O devices

cache and main memories

⇒ Which of the following best represents the output impedance of an actual op-amp?

10 ohm

100 ohm

10 k ohm

100 k ohm

⇒ Kirchoff's laws are applicable to

steady state conditions only

transient conditions only

both steady state and transient condition

both steady state and transient condition but with some constraints

⇒ In figure, I

_{D}= 4 mA. Then V

_{S20 V16 V6 V0.6 V}

⇒ In figure, the value of R shoul

12 Ω

6 Ω

3 Ω

1.5 Ω

⇒ Transfer function of a linear system is 200

*e*

^{-j10ω}The system is a

distortionless Attenuator

amplifier with Phase distortion

distortionless Amplifier

attenuator with Phase distortion

⇒ To select one out of N equally probable events, the number of bits required is

log

_{2}N

log

_{10}N

log

_{e}N

N