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Q1. | In a P-N-P transistor, with normal bias |

A. | the collector junction has negligible resistance [Wrong Answer] |

B. | only holes cross the collector junction [Wrong Answer] |

C. | the collector-base junction is reverse biased and the emitter base junction is forward biased [Correct Answer] |

D. | only majority carriers cross the collector junction [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 :**

⇒ In the op-amp circuit of figure, V

_{03 V1 - 4 V2-3 V1 + 4 V23(V1 - V2)-3(V1 - V2)}

⇒ Read the following statements about sets

- If A and B are sets then A + B denotes union of sets A and B.
- The union of A and B is that set whose elements are in either A or B or both.
- If A and B are sets, then difference of sets A and B is denoted by A - B.
- A - B in the set obtained by removing elements of A from B.

All

1, 2 and 3 only

2 and 3 only

1 and 4 only

⇒ Find E at P(1, 1, 1) caused by four identical 3

*n*C point charges located at P

_{1}(1, 1, 0), P

_{2}(- 1, 1, 0), P

_{3}(- 1, - 1, 0) P

_{4}(1, - 1, 0)

21.58

*a*

*+ 21.58*

_{x}*a*

*+ 12*

_{y}*a*

*V/m*

_{z}6.82

*a*

*+ 6.82*

_{x}*a*

*+ 32.89*

_{y}*a*

*V/m*

_{z}-6.82

*a*- 6.82

_{x}*a*- 32.89

_{y}*a*V/m

_{z}-21.58

*a*- 21.58

_{x}*a*- 12

_{y}*az*V/m

⇒ Magnetic effect of current is used in

ammeters

voltmeters

wattmeters

ammeters, voltmeters, wattmeters and energy meters

⇒ The discussing sharing of a communication satellite by many geographically dispersed Earth station, DAMA means

Demand-Assigned Multiple Access

Decibel Attenuated Microwave Access

Digital Analog Master Antenna

Dynamically-Assigned Multiple Access

⇒

*N*-type silicon is obtained by doping silicon with

germanium

aluminium

boron

phosphorus

⇒ In indicating instruments the controlling torque is provided by a spring.

TRUE

FALSE

⇒ A MASER is a

low noise device

high noise device

medium noise device

may be either high or medium noise device

⇒ For an N-point FFT algorithm with N = 2

^{m}which one of the following statements is TRUE?

It is not possible to construct a signal flow graph with both input and output in normal order

The number of butterflies in the

*m*

^{th}stage is N/m

In-place computation requires storage of only 2N node data

Computation of a butterfly requires only one complex multiplication

⇒ The dynamic resistance of a forward biased

*p*-

*n*diode

varies inversely with current

varies directly with current

is constant

is either constant or varies directly with current

⇒ The microprograms provided by a manufacturer to be used on his microprogrammed computer are generally called

software

network

firmware

hardware

⇒ Antenna efficiency of antenna is, if radiation resistance is 370 Ω and loss resistance is 100 Ω

0.8

0.87

0.78

0.2127

⇒ Which converters uses integrating op-amp?

Parallel A/D converter

Single slope A/D converter

Dual slope A/D converter

Both (b) and (c)

⇒ The time base of a high frequency CRO whose screen diameter is 10 cm is set at 10 μ sec/cm. The lowest frequency which can be fully displayed on the screen is

more than 100 kHz

equal to 100 kHz

equal to 10 kHz

less than 10 kHz

⇒ Which one of the following compounds is widely used for making ferrites?

FeO

CuO

MgO

Fe

_{2}O

_{3}

⇒ The bandwidth required for amplitude modulation is

half the frequency of modulating signal

equal to the frequency of modulating signal

twice the frequency of modulating signal

four times the frequency of modulating signal

⇒ When iron rod is magnetised by the flowing through its coil, the polarities of its different points wil

Pole A is N-pole, B is S-pole and C is neutral

A is N, B and C is S

A is N, C is S

A is S, C is neutral, B is N

⇒ In all metals

conductivity decreases with increase in temperature

current flow by electrons as well as by holes

resistivity decreases with increase in temperature

the gap between valence and conduction bands is small

⇒ What is the propagation constant for air filled wave guide with dimensions

*a*= 1.59" and

*b*= 0.795" at 4.95 GHz. The wave impedance is

400.94 Ω

562.94 Ω

502.80 Ω

492.80 Ω

⇒ For the K map of the given figure the simplified Boolean expressio

AC + A B

A BC + A B C + A B C + AB C

AC + A B + AC

A C + A B + AB

⇒ If the intermediate frequency of a superheterodyne receiver falls within the tuning range of the receiver

Unsuitability will occur

Heterodyne whistles will be heard

Tuning to the frequency band immediately adjacent to the intermediate frequency will become impossible

All of the above

⇒ Present day stereophonic systems have

only CD playback facility

only tape playback facility

both CD and tape playback facilities along with radio

none of the above

⇒ In a 3 phase full wave regulator feeding a star connected resistance load, firing angle is 75°. Then the number of thyristors conducting at one time is

1

2

3

4

⇒ Which of the following contributes to harmonics distortion in amplifiers?

Positive feedback

Presence of noise

Defective active device

Non-linearity in active device

⇒ The ALU carrier out arithmetic and logic operations (OR AND, NOT, etc.) it processes

decimal numbers

binary numbers

hexadecimal numbers

octal numbers

⇒ For the NMOS gate in the given figure,

ABCDE

(AB + C) (D + E)

A(B + C) + DE

A + B C + DE

⇒ Assuming earth to be a sphere of radius 6400 km and height of a geosynchronous satellite above Earth as 36000 km, the velocity of a geosynchronous satellite is __________ km/hr.

28000

15000

36000

11100

⇒ Most of the digital computers do not have floating-point hardware because

floating point hardware is costly

it is slower than software

it is not possible to perform floating point addition by hardware

of not specific reason

⇒ An RLC series circuit is excited by a step voltage E. The units of roots of characteristic equation are

seconds

1/seconds

tesla

henry

⇒ In 8085 microprocessor, the interrupt enable flip-flop is reset by

DI instruction only

system RESET only

interrupt acknowledgment only

all of the above