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Q1. | In CE connection, the leakage current of a transistor is about |

A. | 10 x 10^{-9} A [Wrong Answer] |

B. | 5 x 10^{-6} A [Wrong Answer] |

C. | 200 x 10^{-6} A [Correct Answer] |

D. | 5 x 10^{-3} A [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 :**

⇒ F.T. of continuous non-periodic signal is

aperiodic

periodic

a and b

none

⇒ In a FM waveform, the side bands are spaced at intervals equal to

four times the modulating frequency

twice the modulating frequency

half the modulating frequency

modulating frequency

⇒ In a C expression using assignment operators, relational operators and arithmetic operators, the hierarchy of operations (in the absence of parenthesis) is

assignment, relational, arithmetic

relational, assignment, arithmetic

arithmetic, assignment, relational

arithmetic, relational, assignment

⇒ The typical squelch circuit

cuts off an IF amplifier when the AGC is maximum

cuts off an IF amplifier when the AGC is minimum

cuts off an audio amplifier when the carrier is absent

eliminates the RF interference when the signal is weak

⇒ If the time is counted from the instant when an ac wave is at its peak value, we get a

sine wave

cosine wave

distorted sine wave

none of the above

⇒ Refer to the NAND and NOR latches shown in the figure. The inputs (P

_{1}, P

_{2}) for both the latches are first made (0, 1) and then, after a few seconds, made (1, 1). The corresponding stable outputs (Q

_{1}, Q

_{2})

NAND: first (0, 1) then (0, 1) NOR: first (1, 0) then (0, 0)

NAND: first (1, 0) then (1, 0) NOR: first (1, 0) then (1, 0)

NAND: first (1, 0) then (1, 0) NOR: first (1, 0) then (0, 0)

NAND: first (1, 0) then (1, 1) NOR: first (0, 1) then (0, 1)

⇒ Audio amplifiers need

Bass control

Treble control

Both Bass and Treble control

Either Bass or Treble control

⇒ An AC source or RMS voltage 20V with internal impedance Z

_{s}= (1 + 2

*j*) Ω feeds a load of impedance Z

_{L}= (7 + 4

*j*) Ω in the figure below. The reactive power consumed by the loa

8 VAR

16 VAR

28 VAR

32 VAR

⇒ An FM transmitter delivers 80W to a load of 30 W when no modulation is present. The carrier is now frequency modulated by a single sinusoidal signal and the peak frequency deviation is so adjusted to make the amplitude of the second sideband is zero in the given out

5.12 W

21.78 W

2.56 W

16.81 W

⇒ A sine wave with slew rate distortion looks like

step wave

square wave

triangular wave

cosine wave

⇒ If

*u*is input,

*y*is output and

*a*,

*b*are constants, the system

*y*=

*au*+

*b*

is linear

is nonlinear

may be linear or nonlinear dependig on values of

*a*and

*b*

may be linear or nonlinear depending on value of

*u*

⇒ Surface impedance at high frequencies is a consideration for

ferrites

semiconductors

good conductors

dielectrics

⇒ The signal

*x*(

*t*) = A cos (ω

_{0}

*t*+ φ) is

energy signal

power signal

energy Power

none

⇒ The sum of 1110101

_{2}and 11011

_{2}in decimal form will be

65

75

85

95

⇒ Consider a silicon p-n junction at room temperature having the following paramet

is 0.70V

is 0.76V

is 0.82V

cannot be estimated from the data given

⇒ For an P-channel enhancement type MOSFET determine the drain current if K = 0.278 x 10

^{-3}A/V

^{2}, V

_{GS}= -4V, V

_{T}= -2V, Voltage equivalent at 27°C = 26 mV.

10 mA

1.11 mA

0.751 mA

46.98 mA

⇒ A lag compensator is essentially a

low pass filter

high pass filter

band pass filter

either (a) or (b)

⇒ A 16-megabit dynamic random access memory (DRAM) is an integrated circuit capable of storing __________ characters (bytes).

1048567

16 x 1024 x 10

^{6}

16 x 10

^{6}

2.1 x lo

^{6}

⇒ Frequency modulation consists in

varying the frequency and amplitude of the carrier in accordance with the instantaneous value of modulating signal

varying the amplitude of the carrier in accordance with the instantaneous value of the modulating voltage

varying the frequency of the carrier voltage in accordance with the instantaneous value of the modulating voltage

vary the frequency of the carrier voltage

⇒ If E is energy level of electron and E

_{F}is Fermi level, then

all quantum states with E less than E

_{F}will be occupied at T = 0

all quantum states with E less than E

_{F}will be empty at T = 0

some quantum states with E less than E

_{F}will be occupied at T = 0

none of the above

⇒ Pick the odd one out

PPM

PDM

PWM

PLM

⇒ A message signal with bandwidth 10 kHz is lower sideband SSB modulated with carrier frequency

*f*

_{c1}= 10

^{6}Hz. The resulting signal is then passed though a narrow band frequency modulator with carrier frequency

*f*

_{c2}= 10

^{9}Hz. The bandwidth of the output would be

4 x 10

^{4}Hz

2 x 10

^{6}Hz

2 x 10

^{9}Hz

2 x 10

^{10}Hz

⇒ The electric intensity for free space is given by

ε

_{0}

*d*

σ/ε

_{0}

σ.ε

_{0}

*d*/ε

_{0}

⇒ In 2's complement representation, a certain negative number - N is 1011. The representation for + N is

100

101

110

11

⇒ Audio tapes have two tracks each 2.5 mm wide.

TRUE

FALSE

⇒

Match the following:

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

A. | Tangent galvanometer | 1. | Can be used for dc only |

B. | Moving coil instrument | 2. | Integrating instrument |

C. | Household energy meter | 3. | Used for voltage measurement only |

D. | Electrostatic instrument | 4. | Absolute instrument |

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

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

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

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

⇒ At a given probability of error, binary coherent FSK is interior to binary coherent PSK by

6 dB

3 dB

2 dB

0 dB

⇒ Choose the correct option, if

*b*(branch),

*n*(nodes),

*l*(links)

*b*=

*n*+

*l*- 1

no. of twig =

*n*- 1

*b*=

*n*-

*l*+ 1

*b*,

*a*

⇒ Which of the following is the poorest conductor of electricity?

Aluminium

Nichrome

Copper

All of the above

⇒ Solution of Laplace equations, which are continuous through the second derivative, are called

bessel functions

odd functions

harmonic functions

fundamental functions