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Assertion (A): In p-n-p transistor collector current is termed negative. Reason (R): In p-n-p transistor holes are majority carriers. | |
A. | Both A and R are true and R is correct explanation of A [Wrong Answer] |
B. | Both A and R are true but R is not a correct explanation of A [Correct Answer] |
C. | A is true but R is false [Wrong Answer] |
D. | A is false but R is true [Wrong Answer] |
View Answer
Explanation:-
Answer : B Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ Which of the following oscillators is suitable for frequencies in the range of mega hertz?
RC phase shift
Wien bridge
Hartley
Both (a) and (c)
⇒ In all insulators the bonding is covalent.
TRUE
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⇒ It is required to trace the output characteristics of a CE bipolar transistor on a CRO screen. The proper method is
apply the voltage drop across collector resistance to Y input, disconnect sweep generator and apply V_{CE} to X input
apply voltage drop across collector resistance to Y input
apply V_{CE} to X input
apply V_{CE} to Y input, disconnect the sweep generator and apply voltage drop across collector resistance to X input
⇒ The forbidden energy gap for silicon is
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AB + AB
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⇒ Which of the following oscillators is suitable for frequencies in the range of mega hertz?
RC phase shift
Wien bridge
Hartley
Both (a) and (c)
⇒ In all insulators the bonding is covalent.
TRUE
FALSE
⇒ It is required to trace the output characteristics of a CE bipolar transistor on a CRO screen. The proper method is
apply the voltage drop across collector resistance to Y input, disconnect sweep generator and apply V_{CE} to X input
apply voltage drop across collector resistance to Y input
apply V_{CE} to X input
apply V_{CE} to Y input, disconnect the sweep generator and apply voltage drop across collector resistance to X input
⇒ The forbidden energy gap for silicon is
0.12 eV
1.12 eV
0.72 eV
7.2 eV
⇒ Boolean expression for the output of XNOR (Equivalent) logic gate with inputs A and B is
AB + AB
AB + AB
(A + B). (A + B)
(A + B). (A + B)
⇒ In digital computer programming, subroutines are used
to reduce program execution time at the expense of more memory
to reduce storage requirements
to increase programming ease and reduce storage requirements
because most of the functions are same
⇒ The distance of a synchronous satellite from Earth's surface is __________ km.
300
10000
35900
5
⇒ The following sequence represents autocorrelation of a real valued signal. The energy of real valued sequence is given by __________ x(n) = {1, _, 3, _, 5, _, 7, _, 9, 10, _, 8, _, 6, _, 4, _, 2
2[1^{2} + 2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2} + 7^{2} + 8^{2} + 9^{2}] + 10^{2}
10
10^{2}
2[1^{2} + 2^{2} + 3^{2} + 4^{2} + 5^{2} + 6^{2} + 7^{2} + 8^{2} + 9^{2} + 10^{2}]
⇒ Which of the following is not a data base function?
DAVERAGE
MAX
DCOUNT
DSTDEV
⇒ The signumm function written as [sgn(t)] is defined as
sgn(t) = - 1 for t < 0, = 0 for t = 0 and = 1 for t > 0
sgn(t) = 1 for t < 0, = 0 for t = 0 and = - 1 for t > 0
sgn(t) = 0 for t < 0, = 1 for t = 0 and = 0 for t > 0
sgn(t) = 0 for t < 0, = 1 for t^{3} 0
⇒ The transition of electron from energy level W_{1} to W_{2} is associated with emission or absorption of electro magnetic radiation of frequency f such that
hf = |W_{1} - W_{2}|
|W_{1} - W_{2}|f = h
hf = 0.5|W_{1} - W_{2}|
(hf)^{2} = |W_{1} - W_{2}|
⇒ Entropy gives
measure of Uncertainty
rate of Information
average information
probability of Information
⇒ SHF range is
30 - 300 MHz
300 - 3000 MHz
3000 - 30000 MHz
30000 - 300000 MHz
⇒ Thermal run away of a transistor occurs when
heat dissipation from transistor is excessive
transistor joints melt due to high temperature
there is excessive leakage current due to temperature rise
none of the above
⇒ For the circuit in figure, fed by a unit step voltage, v_{c1 - e-t/RCe-t/RCet/RC1}
⇒ The main advantage of CMOS circuit is
high gain
high output impedance
low power consumption
high gain and high output impedance
⇒ 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
⇒ A number is expressed in binary 2's complement as 10011 decimal equivalent value is
19
13
-19
-13
⇒ Which of the following are voltage controlled devices?
Vacum triode
FET
SCR
Both (a) and (b)
⇒ Line of sight transmission is used in
radio frequencies below 1 MHz
VHF only
audio signals only
VHF and UHF
⇒ In a parallel inverter
each thyristor is turned on twice during each cycle
each thyristor is turned on once during each cycle
each thyristor is turned on either once or twice in each load cycle
each thyristor may be turned on upto four times in each load cycle
⇒ The output y(t) of a linear time invariant system is related to its input x(t) by the following equation y(t) = 0.5x(t - t_{d} + 1) + x(t - t_{d}) + 0.5 x(t - t_{d} + 7). The filter transfer function H(ω) of such a system is given by
(1 + cos ωt)e^{-jωt} d
(1 + 0.5 cos ωt)e^{-jωt} d
(1 + cos ωt)e^{jωt} d
(1 - 0.5 cos ωt)e^{-jωt} d
⇒ The stage marked X in the architecture shown below of a two stage op-amp
Direct coupled amplifier
Buffer amplifier
Level shifter
Blocking oscillator
⇒ The arrangement in the given figure is a hybid T. If 100 mW fed at port 1, the power reflected back at port
0
25 mW
50 mW
100 mW
⇒ In case of surface waves the field strength at a point is directly proportional to
antenna height
wave frequency
current of the antenna
distance of the point from the antenna
⇒
Assertion (A): Radar gave birth to microwave technology.
Reason (R): In radar systems very high frequencies give the most accurate results.
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
⇒ Ferroelectric materials are those which
cannot be polarized
have a permanent polarization
have a_{e} equal to zero
have μ_{p} = 0
⇒ A voltage wave containing 10% third harmonic is applied to a scries R-L circuit. The percentage third harmonic content in the current wave will be
more than 10%
10% or less than 10%
less than 10%
10% or more or less
⇒ In the circuit of figure, v_{03 v1 + 4 v2-3 v1 - 4 v24 v1 + 3 v2-4 v1 - 3 v2}
⇒ In an R-S latch, to set the output to high
R is low and S is high
R and S are high
R and S are low
R is high and S is low