Users Also Read
MCQ's Search Engine
Electrical Engineering
Mechanical Engineering
Civil Engineering
Automobile Engineering
Chemical Engineering
Computer Engineering
Electronics Engineering
Medical Science Engg
At absolute temperature | |
A. | the forbidden energy gap in germanium is higher than that in silicon [Wrong Answer] |
B. | the forbidden energy gap in germanium and silicon are equal [Wrong Answer] |
C. | the forbidden energy gap in silicon is higher than that in germanium [Correct Answer] |
D. | none of the above [Wrong Answer] |
View Answer
Explanation:-
Answer : C Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ The following circuit resonate
0.5 Hz
5 Hz
1 rad/sec
0.5 rad/sec
⇒ If Z(s) has a pole at origin, the realization leads to
a resistance in series
an inductance in series
a capacitance in series
a resistance or capacitance in series
⇒
A-2, B-3, C-3, D-1
A-2, B-3, C-1, D-3
A-3, B-2, C-2, D-1
A-2, B-3, C-2, D-1
⇒
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
A is false but R is true
⇒ Which one of the following statements is correct for MOSFETS?
p channel MOS is easier to produce than n channel MOS
n channel MOS must have twice the area of p channel MOS for the same ON resistance
p channel MOS has faster switching action than n channel MOS
p channel MOS has higher packing density than n channel MOS
⇒ In a square law modulator, the carrier frequency should be __________ times than the highest modulating frequency.
1
2
4
3
⇒ If the target cross-section is changing, the best scanning system for accurate tracking is
lobe switching
monopulse
sequential lobing
conical scanning
⇒ Find the power absorbed or delivered by each sou
a = -32 b = - 12 c = -80 d = -60
a = -32 b = - 12 c = 80 d = 60
a = 32 b = 12 c = -80 d = 60
a = -32 b = 12 c = 80 d = -60
⇒ Binary 1111 when added to binary 11111, the result in binary is
111111
1111
1000
10000
⇒ If a sequence is causal then ROC is (where a is any number)
|z| > a
|z| < a
|z| = a
Entire Plane
⇒ The maximum effective aperture of λ/2 (half-wave) antenna is
0.013 λ^{2}
0.13 λ^{2}
1.3 λ^{2}
13 λ^{2}
⇒ In the circuit, V_{s} = 10 cos ωt, power drawn by the 4Ω resistor is 8 watt. The power facto
1
0.5
0.85
0
⇒ For the system of the given figure |G(jω)| = 0 dB at &omeg
0
1 rad/sec.
∞
2.38 rad/sec.
⇒ Which display device resembles vacuum tube?
LED
LCD
VF
None of these
⇒ The maximum permissible distance between two samples of a 10 kHz signal
100 μ sec
50 μ sec
10 μ sec
none
⇒ A single phase full wave regulator feeds a resistive load. The firing angle of thyristors is 90°. The input power factor is
1
0.707 lagging
0.5 lagging
0.2 lagging
⇒ A two branch parallel tuned circuits has a coil of resistance R and inductance L in one branch and capacitance C in the second branch. The bandwidth is 200 radians/sec. A load of resistance R_{L} is connected in parallel. The new bandwidth will be
200 rad/sec
more than 200 rad/sec
less than 200 rad/sec
200 rad/sec or less
⇒ In the sale of diamonds the unit of weight is carat. One carat is equal to
100 mg
150 mg
200 mg
500 mg
⇒ The circuit in the given figur
positive logic OR gate
negative logic OR gate
negative logic AND gate
positive logic AND gate
⇒
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
⇒ Gold is often diffused into silicon P-N junction devices to
increase recombination rate
reduce recombination rate
make silicon a direct gap semiconductor
make silicon semimetal
⇒ If a line is open circuited Z_{in} = Z_{0} tanh (gl).
TRUE
FALSE
⇒ Out of multiplexer and demultiplexer, which can be used as a logic function generator?
Multiplexer only
Demultiplexer only
Both
None
⇒ The intrinsic impedance of free space
increases with increase of frequency
decreases with increase of frequency
is independent of frequency
none
⇒ For a = - 1, find the value of V_{2∞0V1none of the above}
⇒ A sine wave is passed through an amplifier which severely limits it symmetrically. If then passes to a second amplifier which is narrow band and tuned to the frequency of the original sine wave. What will be the output wave from this second amplifier?
A square wave of the same frequency as that of the original sine wave
A square wave of double the frequency of that of original sine wave
A sine wave of constant amplitude at the frequency of the original sine wave
A sine wave of constant amplitude at double frequency of the original sine wave
⇒ In which of the following 8085 instructions is the 8 bit number in accumulator adjusted to form two four bit BCD numbers
⇒ ISDN stands for
Integrated Services Digital Network
Inter Services Digital Network
Inter Subscriber Digital Network
integrated Subscriber Digital Network
⇒
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
⇒ The impulse response h[n] of a linear time invariant system is given by h[n] = ∪[n + 3 ] + ∪[n - 2] -2∪[n -7]. The above system is
stable but non-casual
stable and casual
casual but unstable
unstable and not casual
⇒ The following circuit resonate
0.5 Hz
5 Hz
1 rad/sec
0.5 rad/sec
⇒ If Z(s) has a pole at origin, the realization leads to
a resistance in series
an inductance in series
a capacitance in series
a resistance or capacitance in series
⇒
Match the following:
List I (Library function in Pascal) | List II (Type of argument) | ||
---|---|---|---|
A. | ROUND X | 1. | X in radians |
B. | ABS X | 2. | X real |
C. | SQR X | 3. | X real or integer |
D. | SIN X |
A-2, B-3, C-3, D-1
A-2, B-3, C-1, D-3
A-3, B-2, C-2, D-1
A-2, B-3, C-2, D-1
⇒
Assertion (A): The reverse saturation current in a semiconductor diode is 4nA at 20°C and 32 nA at 50°C.
Reason (R): The reverse saturation current in a semiconductor diode doubles for every 10°C rise in temperature.
Both A and R are true and R is correct explanation of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
A is false but R is true
⇒ Which one of the following statements is correct for MOSFETS?
p channel MOS is easier to produce than n channel MOS
n channel MOS must have twice the area of p channel MOS for the same ON resistance
p channel MOS has faster switching action than n channel MOS
p channel MOS has higher packing density than n channel MOS
⇒ In a square law modulator, the carrier frequency should be __________ times than the highest modulating frequency.
1
2
4
3
⇒ If the target cross-section is changing, the best scanning system for accurate tracking is
lobe switching
monopulse
sequential lobing
conical scanning
⇒ Find the power absorbed or delivered by each sou
a = -32 b = - 12 c = -80 d = -60
a = -32 b = - 12 c = 80 d = 60
a = 32 b = 12 c = -80 d = 60
a = -32 b = 12 c = 80 d = -60
⇒ Binary 1111 when added to binary 11111, the result in binary is
111111
1111
1000
10000
⇒ If a sequence is causal then ROC is (where a is any number)
|z| > a
|z| < a
|z| = a
Entire Plane
⇒ The maximum effective aperture of λ/2 (half-wave) antenna is
0.013 λ^{2}
0.13 λ^{2}
1.3 λ^{2}
13 λ^{2}
⇒ In the circuit, V_{s} = 10 cos ωt, power drawn by the 4Ω resistor is 8 watt. The power facto
1
0.5
0.85
0
⇒ For the system of the given figure |G(jω)| = 0 dB at &omeg
0
1 rad/sec.
∞
2.38 rad/sec.
⇒ Which display device resembles vacuum tube?
LED
LCD
VF
None of these
⇒ The maximum permissible distance between two samples of a 10 kHz signal
100 μ sec
50 μ sec
10 μ sec
none
⇒ A single phase full wave regulator feeds a resistive load. The firing angle of thyristors is 90°. The input power factor is
1
0.707 lagging
0.5 lagging
0.2 lagging
⇒ A two branch parallel tuned circuits has a coil of resistance R and inductance L in one branch and capacitance C in the second branch. The bandwidth is 200 radians/sec. A load of resistance R_{L} is connected in parallel. The new bandwidth will be
200 rad/sec
more than 200 rad/sec
less than 200 rad/sec
200 rad/sec or less
⇒ In the sale of diamonds the unit of weight is carat. One carat is equal to
100 mg
150 mg
200 mg
500 mg
⇒ The circuit in the given figur
positive logic OR gate
negative logic OR gate
negative logic AND gate
positive logic AND gate
⇒
Assertion (A): Electromagnetic waves in free space spread uniformly in all directions from a point source
Reason (R): Free space has no interference or obstacles.
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
⇒ Gold is often diffused into silicon P-N junction devices to
increase recombination rate
reduce recombination rate
make silicon a direct gap semiconductor
make silicon semimetal
⇒ If a line is open circuited Z_{in} = Z_{0} tanh (gl).
TRUE
FALSE
⇒ Out of multiplexer and demultiplexer, which can be used as a logic function generator?
Multiplexer only
Demultiplexer only
Both
None
⇒ The intrinsic impedance of free space
increases with increase of frequency
decreases with increase of frequency
is independent of frequency
none
⇒ For a = - 1, find the value of V_{2∞0V1none of the above}
⇒ A sine wave is passed through an amplifier which severely limits it symmetrically. If then passes to a second amplifier which is narrow band and tuned to the frequency of the original sine wave. What will be the output wave from this second amplifier?
A square wave of the same frequency as that of the original sine wave
A square wave of double the frequency of that of original sine wave
A sine wave of constant amplitude at the frequency of the original sine wave
A sine wave of constant amplitude at double frequency of the original sine wave
⇒ In which of the following 8085 instructions is the 8 bit number in accumulator adjusted to form two four bit BCD numbers
DAD rp
DAA
DCX rp
ADC M
⇒ ISDN stands for
Integrated Services Digital Network
Inter Services Digital Network
Inter Subscriber Digital Network
integrated Subscriber Digital Network
⇒
Assertion (A): In state space analysis, capacitors are taken to be in tree.
Reason (R): State variable analysis is very suitable for computer solution.
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
⇒ The impulse response h[n] of a linear time invariant system is given by h[n] = ∪[n + 3 ] + ∪[n - 2] -2∪[n -7]. The above system is
stable but non-casual
stable and casual
casual but unstable
unstable and not casual