Users Also Read
MCQ's Search Engine
Electrical Engineering
Mechanical Engineering
Civil Engineering
Automobile Engineering
Chemical Engineering
Computer Engineering
Electronics Engineering
Medical Science Engg
The number of valence electrons in donor impurity are | |
A. | 5 [Correct Answer] |
B. | 4 [Wrong Answer] |
C. | 3 [Wrong Answer] |
D. | 1 [Wrong Answer] |
View Answer
Explanation:-
Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ In ac circuits maximum power is delivered to a load if load impedance is conjugate of source impedance.
TRUE
FALSE
⇒ Consider the common emitter amplifier shown below with the following circuit parameters: β = 100, g_{m} = 0.3861 A/V, r_{0} = ∞ r_{p} = 259 Ω, R_{s} = 1 kΩ, R_{B} = 93 kΩ, R_{C} = 250 Ω, R_{L} = 1 kW, C_{1} = ∞ and C_{2} = 4.
258 Ω
1258 Ω
93 kΩ
∞
⇒ The selectivity of a radio receiver is
its ability to reject adjacent unwanted signals
its ability to amplify weak signals
the frequency at which it gives maximum amplification to signal.
its ability to suppress noise.
⇒ The range of values of a and b for which the linear time invariant system with impulse respon
|a| > 1, |b| > 1
|a| < 1, |b| < 1
|a| < 1, |b| > 1
|a| > 1, |b| < 1
⇒ For a low level AM system, the amplifiers modulated stage must be
linear devices
harmonic devices
class C amplifiers
non-linear devices
⇒
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
⇒ The internal structure of PL A is similar to
RAM
ROM
both RAM and ROM
neither RAM nor ROM
⇒ Which of these are allowed in Basic?
Arithmetic operators +, -, *, / etc.
Logical operators AND, OR, NOT
Relational operators =, <, > etc.
All of the above
⇒ As regards ∈_{0} and ∈_{r} (absolute and relative permittivity)
both ∈_{0} and ∈_{r} can be interpreted in terms of atomic properties of medium
only ∈_{r} can be interpreted in terms of atomic properties of medium
only ∈_{0} can be interpreted in terms of atomic properties
∈_{r} has no physical significance
⇒ A two branch parallel tuned circuit has a coil of resistance 100 Ω and inductance 0.005 H in one branch and 10 nF capacitor in the second branch. At resonance frequency is
100 rad/sec
10000 rad/sec
1000 rad/sec
more than 10000 rad/sec
⇒ A transmission line is feeding 1 watt of power to a horn antenna having a gain of 10 dB. The antenna is matched to the transmission line. The total power radiated by the horn antenna into the free space is
10 watts
1 watt
0.1 watt
0.01 watt
⇒ In a driving point function, the degrees of numerator and denominator polynomials in s may differ by either zero or one only.
TRUE
FALSE
⇒ A zener diode is used in
voltage regulator circuit
amplifier circuits
both voltage regulator and amplifier circuit
none of the above
⇒ 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
⇒ A number is expressed in binary 2's complement as 10011 decimal equivalent value is
19
13
-19
-13
⇒ Which of the following devices has metal-silicon junction?
General purpose power diode
Schottky diode
SCR
MOSFET
⇒ A system has high gain and phase margin. The system is
very stable
sluggish
very stable and sluggish
oscillatory
⇒ Figure shows a Wheatstone bridge with RTD to one arm. If resistance of RTD = 1020 Ω, the voltage V_{0}
49 mV
51 mV
48 mV
45 mV
⇒ Digital television is also called
High digital television
High definition television
High deflection television
High display television
⇒ Avalanche beakdown is primarily dependent on the phenomenon of
doping
collision
recombination
ionization
⇒
A-4, B-2, C-1
A-2, B-1, C-3
A-3, B-4, C-1
A-2, B-3, C-1
⇒ For a transfer function the coefficients of the numerator and denominator polynomials in s must be real.
TRUE
FALSE
⇒ In 2 out of 5 code, decimal number 8 is
11000
10100
11000
1010
⇒ Two 2 port circuits are connected cascaded. To determine the response, it is more convenient to use
O.C. impedance parameters
S.C. admittance parameters
ABCD parameters
h parameters
⇒ Which of the following is invalid in Basic?
A ** B - C
5.2 ** 4.3
5.2 ** (- 4.3)
(- 5.2) ** (4.3)
⇒ A delta connection contains three impedances of 60 Ω each. The impedances of equivalent star connection will be
15 Ω
20 Ω
30 Ω
40 Ω
⇒ The circuit shown I/P in the figure repres
Low pass filter
High pass filter
Band Pass filter
Band stop filter
⇒ The property not valid for basic singularity function is
it is even signal
convolution of any arbitrary function x{t) and an impulse is the original function itself.
the sum of two impulses at same location is the impulse with the strength equal to the summation of individual strengths.
none of these.
⇒ The action of backward wave oscillator is similar to that of
klystron amplifier
reflex klystron oscillator
TWT
magnetron
⇒ In ac circuits maximum power is delivered to a load if load impedance is conjugate of source impedance.
TRUE
FALSE
⇒ Consider the common emitter amplifier shown below with the following circuit parameters: β = 100, g_{m} = 0.3861 A/V, r_{0} = ∞ r_{p} = 259 Ω, R_{s} = 1 kΩ, R_{B} = 93 kΩ, R_{C} = 250 Ω, R_{L} = 1 kW, C_{1} = ∞ and C_{2} = 4.
258 Ω
1258 Ω
93 kΩ
∞
⇒ The selectivity of a radio receiver is
its ability to reject adjacent unwanted signals
its ability to amplify weak signals
the frequency at which it gives maximum amplification to signal.
its ability to suppress noise.
⇒ The range of values of a and b for which the linear time invariant system with impulse respon
|a| > 1, |b| > 1
|a| < 1, |b| < 1
|a| < 1, |b| > 1
|a| > 1, |b| < 1
⇒ For a low level AM system, the amplifiers modulated stage must be
linear devices
harmonic devices
class C amplifiers
non-linear devices
⇒
Assertion (A): The impedance of a matched load is equal to characteristic impedance of line.
Reason (R): A matched termination absorbs all the power incident on it.
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
⇒ The internal structure of PL A is similar to
RAM
ROM
both RAM and ROM
neither RAM nor ROM
⇒ Which of these are allowed in Basic?
Arithmetic operators +, -, *, / etc.
Logical operators AND, OR, NOT
Relational operators =, <, > etc.
All of the above
⇒ As regards ∈_{0} and ∈_{r} (absolute and relative permittivity)
both ∈_{0} and ∈_{r} can be interpreted in terms of atomic properties of medium
only ∈_{r} can be interpreted in terms of atomic properties of medium
only ∈_{0} can be interpreted in terms of atomic properties
∈_{r} has no physical significance
⇒ A two branch parallel tuned circuit has a coil of resistance 100 Ω and inductance 0.005 H in one branch and 10 nF capacitor in the second branch. At resonance frequency is
100 rad/sec
10000 rad/sec
1000 rad/sec
more than 10000 rad/sec
⇒ A transmission line is feeding 1 watt of power to a horn antenna having a gain of 10 dB. The antenna is matched to the transmission line. The total power radiated by the horn antenna into the free space is
10 watts
1 watt
0.1 watt
0.01 watt
⇒ In a driving point function, the degrees of numerator and denominator polynomials in s may differ by either zero or one only.
TRUE
FALSE
⇒ A zener diode is used in
voltage regulator circuit
amplifier circuits
both voltage regulator and amplifier circuit
none of the above
⇒ 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
⇒ A number is expressed in binary 2's complement as 10011 decimal equivalent value is
19
13
-19
-13
⇒ Which of the following devices has metal-silicon junction?
General purpose power diode
Schottky diode
SCR
MOSFET
⇒ A system has high gain and phase margin. The system is
very stable
sluggish
very stable and sluggish
oscillatory
⇒ Figure shows a Wheatstone bridge with RTD to one arm. If resistance of RTD = 1020 Ω, the voltage V_{0}
49 mV
51 mV
48 mV
45 mV
⇒ Digital television is also called
High digital television
High definition television
High deflection television
High display television
⇒ Avalanche beakdown is primarily dependent on the phenomenon of
doping
collision
recombination
ionization
⇒
Assertion (A): For networks in figure (1) and (2) sum of products of branch voltages and branch currents at any time is zero.
Reason (R): The networks in figure (1) and (2) are not the same structura
Both A and R are true and R is correct explanation of A
Both A and R are true and R is not the correct explanation of A
A is true but R is false
A is false but R is true
⇒
List I (Component) | List II (Dominant TE mode) | ||
---|---|---|---|
A. | Rectangular wave guide | 1. | TE_{101} |
B. | Circular waveguide | 2. | TE_{10} |
C. | Rectangular cavity | 3. | TE_{111} |
4. | TE_{11} |
A-4, B-2, C-1
A-2, B-1, C-3
A-3, B-4, C-1
A-2, B-3, C-1
⇒ For a transfer function the coefficients of the numerator and denominator polynomials in s must be real.
TRUE
FALSE
⇒ In 2 out of 5 code, decimal number 8 is
11000
10100
11000
1010
⇒ Two 2 port circuits are connected cascaded. To determine the response, it is more convenient to use
O.C. impedance parameters
S.C. admittance parameters
ABCD parameters
h parameters
⇒ Which of the following is invalid in Basic?
A ** B - C
5.2 ** 4.3
5.2 ** (- 4.3)
(- 5.2) ** (4.3)
⇒ A delta connection contains three impedances of 60 Ω each. The impedances of equivalent star connection will be
15 Ω
20 Ω
30 Ω
40 Ω
⇒ The circuit shown I/P in the figure repres
Low pass filter
High pass filter
Band Pass filter
Band stop filter
⇒ The property not valid for basic singularity function is
it is even signal
convolution of any arbitrary function x{t) and an impulse is the original function itself.
the sum of two impulses at same location is the impulse with the strength equal to the summation of individual strengths.
none of these.
⇒ The action of backward wave oscillator is similar to that of
klystron amplifier
reflex klystron oscillator
TWT
magnetron