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. | IN 3242 is a |

A. | P-N-P transistor [Wrong Answer] |

B. | N-P-N transistor [Wrong Answer] |

C. | UJT [Wrong Answer] |

D. | semi-conductor diode [Correct Answer] |

View Answer
Explanation:-
Answer : DDiscuss 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 :**

⇒ The data about

*p*the pull required to lift a weight

*w*by a pulley bloc

3.2 + 0.171

*w*

2.28 + 0.1879

*w*

1.2 + 0.25

*w*

0.6 + 0.3

*w*

⇒ A single-sideband (SSB) signal contains 3 kW. The power content of the carrier is __________ kW.

2

2

3

0

⇒ In a 3 phase fully controlled converter the firing frequency is

3 times the line frequency

6 times the line frequency

9 times the line frequency

12 times the line frequency

⇒ A conductor in

*x-y*plane and having length 1 m is moving with a velocity V = (2

*i*+ 3

*j*+

*k*) m/sec. A magnetic induction field B = (

*i*+ 2

*j*) Wb/m

^{2}is applied to the conductor. The potential difference between the ends of the conductor is

0

4.88 V

6 V

None of these

⇒ In which condition does BJT behave like a closed switch?

Cut off

Saturation

Forward active

Reverse active

⇒ In a self bias circuit for CE amplifier the collector supply voltage is made twice. The collector current will

decrease

increase

remain the same

increase or decrease

⇒ A trigonometric series has

single sided spectra

zero

sync function

undefined

⇒ Permittivity has the units of F/m.

TRUE

FALSE

⇒ If B is the bandwidth, the thermal noise voltage is proportional to

B

B

^{0.5}

B

^{1.5}

B

^{2}

⇒ From a measurement of the rise time of the output pulse of an amplifier whose input is a small amplitude square wave, one can estimate the following parameter of the amplifier

gain bandwidth product

slew rate

upper 3 dB frequency

lower 3 dB frequency

⇒ For a = - 1, find the value of V

_{2∞0V1none of the above}

⇒ For small size high frequency coils, the most common core material is

air

ferrite

powdered iron

steel

⇒ 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°

⇒ In VHS format each video head is tilted from azimuth by

20°

10°

6°

1°

⇒ Decimal number 46 in excess 3 code =

1000 1001

0111 1001

0111 1111

1000 1111

⇒ When diodes are connected in series to increase voltage rating the peak inverse voltage per junction

should not exceed half the breakdown voltage

should not exceed the breakdown voltage

should not exceed one third the breakdown voltage

may be equal to or less than breakdown voltage

⇒ Two thyristor of same rating and same specifications

will have equal turn on and turn off periods

will have equal turn on but unequal turn off periods

may have equal or unequal turn on and turn off periods

will have unequal turn on and turn off periods

⇒ In figure the open circuit em

15 V

1.45 V

1.475 V

1.485 V

⇒ For a type 0 system and unit ramp input, the steady state error is

0

∞

1

1/K

_{V}⇒ In the circuit, the value of the voltage sour

-22 V

-12 V

+12 V

-10 V

⇒ Which of the following pulse communication system is inherently immune to noise?

PPM

PCM

PWM

PAM

⇒ The zener diode in the rectangular circuit shown in the figure has a zener voltage of 5.8 volts and a zener knee current of 0.5 mA. The maximum load current drawn from this circuit ensuring proper functioning over the input voltage range between 20 and 30 volts

23.7 mA

14.2 mA

13.7 mA

24.2 mA

⇒ Schrodinger wave equation is partial differential equation.

TRUE

FALSE

⇒ In the given figure shows a root locus plot. Consider the following statements for this plot

- The open loop system is a second order system
- The system is overdamped for K > 1
- The system is stable for all values of K

1, 2, 3

1, 3

2, 3

1, 2

⇒ F's complement of (2BFD)

_{hex}is

E 304

D 403

D 402

C 403

⇒ At corner frequency the phase angle of factor 1/(1 +

*j*ωT) is

+90°

-90°

+45°

-45°

⇒

**Assertion (A):** Hollow waveguides are frequently used as transmission lines at microwave frequencies.

**Reason (R):** Waveguide has high power handling capacity, low loss and simple structure.

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

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

A is correct but R is wrong

A is wrong but R is correct

⇒ If

*f*(

_{h}*t*) is the Hilbert transform of

*f*(

*t*), and

*f*(

*t*) is a real valued signal, the pre-envelope of

*f*(

*t*) is

*f*(

*t*) -

*jf*(

_{h}*t*)

*f*(

*t*) +

*jf*(

_{h}*t*)

*f*(

_{h}*t*) +

*jf*(

*t*)

*f*(

_{h}*t*) -

*jf*(

*t*)

⇒ A reactance function

has a pole at origin

has a zero at origin

may have a pole or zero at origin

has a pole or zero at origin and a pole or zero at infinity

⇒ AE 139 is a

tunnel diode

germanium power transistor

photoconductive cell

silicon diode