Users Also Read

MCQ's Search Engine

Electrical Engineering

Mechanical Engineering

Civil Engineering

Automobile Engineering

Chemical Engineering

Computer Engineering

Electronics Engineering

Medical Science Engg

Q1. | The power dissipation in a transistor is the product of |

A. | emitter current and emitter to base voltage [Wrong Answer] |

B. | emitter current and collector to emitter voltage [Wrong Answer] |

C. | collector current and collector to emitter voltage [Correct Answer] |

D. | none of the above [Wrong Answer] |

View Answer
Explanation:-
Answer : CDiscuss 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 :**

⇒ If A = 629 ± 8 and B = 131 ± 3, A - B with range of doubt is

498 ± 8

498 ± 4

498 ± 11

498 ± 13

⇒ In common base amplifier the current gain is less than one, but the voltage gain may be anywhere from

0.5 to 1

1 to 5

5 to 10

50 to 2000

⇒

`LPEPSI`

3

9

13

23

⇒ A ring counter with 5 flip flops will have

5 states

10 states

32 states

infinite states

⇒ The resistance of a 125 Ω strain gauge changes by 1 ohm for 4000 micro strain. The gauge factor is

1.5

2

2.5

3

⇒ The number of essential prime implicant for the logic express

3

5

4

6

⇒ A 75 ohm line is first short terminated and minima locations are noted. Then the short is replaced by resistive load and minima location are again noted. If minima location are not altered and VSWR is 3, the value of resistive load is

25 Ω

50 Ω

225 Ω

250 Ω

⇒ When P_{c} is the unmodulated carrier power and P_{t} is the total power in the modulated wave, then the maximum power in AM wave is

P_{t} = 1.5 P_{c}

P_{t} = 2.5 P_{c}

P_{t} = 2

P_{t} = 22 P_{c}

⇒ Decimal 18.29 when converted int 10's complement will become

81.7707

81.7

81.777

81.077

⇒ Whenever a JFET operates above pinch-off voltage

depletion regions become smaller

drain current increase steeply

drain current starts decreasing

drain current remains nearly constant

⇒ The M.K.S. unit of magnetic field intensity is

ampere

ampere/metre

volt

volt/metre

⇒ The satellites used for intercontinental communication are called

Comsat

Domsat

Marisat

Intelsat

⇒ Which of the following conversion is incorrect?

2048.0625 = 100000000000.0001_{2}

100000011.1001_{2} = 131.5625_{10}

101101_{2} = 45_{8}

Hexadecimal B6C_{7} = 46791_{10}

⇒ In colour TV receiver, varactor diode is used for

detection

rectification

tuning

both (a) and (b)

⇒ The maximum power dissipation capacity of a transistor is 50 mW. If the collector emitter voltage is 10 V, what is the safe collector current that can be allowed through the transistor?

5 mA

2.5 mA

10 mA

25 mA

⇒ In 8085 the address space size is

64 kbits

64 k bytes

32 kbits

16 k bytes

⇒ For a BJT, under the saturation condition,

I_{C} = βI_{B}

I_{C} = aI_{B}

I_{C} is independent of all other parameters

I_{C} < βI_{B}

⇒ In the circuit below, the diode is ideal. The voltage V is give

min(V_{i}, 1)

max(V_{i}, 1)

min (-V_{i}, 1)

max (-V_{i}, 1)

⇒ Troposphere is the upper part of the Earth's atmosphere which absorbs large quantities of Sun's radiations.

TRUE

FALSE

⇒ In floating point representation the number of bits in exponent is

8

7

6

5

⇒ For a Gaussian process, auto-correlation sequence also implies that

statistical independence

statistical dependence

ergodic process

all

⇒ The diffusion current is proportional to

applied electric field

concentration gradient of charge carrier

square of the electric field

cube of the applied electric field

⇒ In the given figure shows a periodic triangular wave. The Fourier series will

all cosine terms

all sine terms

odd cosine terms

odd sine terms

⇒ The simplest mixer circuit for public address system uses

fixed resistances

variable resistances

inductances

capacitances

⇒ In a cycloconverter it is possible to vary

only output frequency

only output voltage

both output voltage and frequency but not simultaneously

both output voltage and output frequency simultaneously

⇒ If the frequency of a wave 20 Hz, the time period is

20 secs

2 secs

0.2 secs

0.05 secs

⇒ The poles of an RC function

are simple and lie or negative real axis

are simple and lie on ω axis

must be complex conjugate

may be anywhere on *s* plane

⇒ The simplest standing wave is due to the value of reflection co-efficient is

-1

zero

unity

infinity

⇒ Fortran 77, C and Pascal are high level languages.

TRUE

FALSE

⇒ Which one is time invariant system?

*y*[*n*] = *x*[2*n*]

*y*[*n*] = *x*[*n*] *x*[*n* - 1]

*y*[*n*] = *x*[*n*/2]

all

```
```

```
```

```
```

```
```