Question is ⇒ Semi conducting materials are all, Options are ⇒ (A) elements, (B) compounds, (C) elements or compounds, (D) elements or mixtures, (E) , Leave your comments or Download question paper.

Question is ⇒ Semi conducting materials are all, Options are ⇒ (A) elements, (B) compounds, (C) elements or compounds, (D) elements or mixtures, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	Semi conducting materials are all
A.	elements [Wrong Answer]
B.	compounds [Wrong Answer]
C.	elements or compounds [Correct Answer]
D.	elements or mixtures [Wrong Answer]
View Answer 1 -1 Explanation:- Answer : C Discuss it below : !! OOPS Login [Click here] is required to post your answer/result Help other students, write article, leave your comments

Previous question Next question

Also Read Similar Questions Below :

⇒

Assertion (A): In an RC coupled amplifier the junction capacitances can be neglected at low frequencies but not at high frequencies

Reason (R): Capacitive reactance is inversely proportional to frequency.

Both A and R are correct and R is correct explanation for A
Both A and R are correct but R is not correct explanation for A
A is correct R is wrong
A is wrong R is correct

⇒ The ending part of the popular teleserial Mahabharat will be beamed to the viewers
WESTAT
INSAT-IC
ARABSAT
INSAT-ID

⇒ The duty cycle of a radar transmitter is equal to
(PRF) (pulse width)
(PRF)/(pulse width)
(pulse width)/(PRF)
(pulse width) + (PRF)

⇒ MTSO stands for
Metropolitan Telecommunication Subscribers Office
Metropolitan Telecommunication Switching Office
Mobile Telecommunication Switching Office
Mobile Telecommunication Subscriber Office

⇒ The dual of quantity charge is
current
Voltage
flux
dΦ/dt

⇒ The multiplication time for 10-bit numbers with 1 MHz clock will be
32 μ sec
20 μ sec
21 μ sec
22 μ sec

⇒ Figure shows a parallel resonant circuit having resonance frequency of 15 MHZ. At this frequ
its impedance is minimum
its impedance is maximum
its impedance is infinite
its impedance is zero

⇒ In p channel JFET, V_GS is positive.
TRUE
FALSE

⇒ The gain of an FET amplifier can be changed by changing
r_m
g_m
R_d
none of the above

⇒ Cassegrain feed is used with a parabolic reflection to
reduce the size of the main reflector
increase the gain of the system
increase the beamwidth of the system
allow the feed to be placed at a convenient point

⇒ In case of photo conductor for germanium when forbidden energy gap is 0.72 eV, the critical wavelength for intrinsic excitation will be
1.43 m
1.43 mm
1.73 mm
1.73 x 10¹² m

⇒ Semi conducting materials are all
elements
compounds
elements or compounds
elements or mixtures

⇒ For a NAND SR latch of input is the normal resting state of inputs is
S = R = 1
S = 0, R = 1
S = 1, R = 0
S = R = 0

⇒ For a P-N junction diode, the current in reverse bias may be
few amperes
between 0.5 A and 1 A
few milliamperes
few micro or nanoamperes

⇒ In a backward wave oscillator the wave
travelling along the line winds itself back and forth
progresses only in forward direction
progresses only in backward direction
either (a) or (c)

⇒

Assertion (A): Ideal current sources and ideal voltage sources do not exist in reality.

Reason (R): All sources have finite internal impedances.

Both A and R are individually true and R is the correct explanation of A
Both A and R are individually true but R is not the correct explanation of A
A is true but R is false
A is false but R is true

⇒ The series 54 H/74 H denotes
Standard TTL
High speed TTL
Low Power TTL
High Power TTL

⇒ The polynomial P (s) = (s - 1) (s² + 1) (s + 2) (s + 3) is
Hurwitz but not strictly Hurwitz
not Hurwitz
strictly Hurwitz
anti/Hurwitz

⇒ During day time ionosphere consist of
D, E, F₂ layers
D, E, F layers
D, E, F₁, F₂ layer
none

⇒ For the network shown, determine z₁ , z₀ and A_{vz_i = 1.067 Ω; z₀ = 3 kΩ; A_v = 280
z_i = 1.067 Ω; z₀ = 3 kΩ; A_v = - 280.37
z_i = 937 Ω; z₀ = 3 Ω; A_v = 281
z_i = 937 Ω; z₀ = 33 kΩ; A_v = - 280.37}

⇒ The number of comparators of needed in a parallel conversion type 8 bit A to D converter is
8
16
255
256

⇒ Start and stop bit do not contain any information but are used in serial communication for
error correction
error detection
synchronization
slowing down the communication

⇒ A broadcast radio transmitter radiates 5 kW when the modulation percentage is 60. How much of this is carrier power?
6.66 kW
5 kW
4.9 kW
4.23 kW

⇒ If the height of transmitting and receiving antenna in a LOS system are 49 meter and a 9 meter respectively then the distance up to which communication may be possible is about
40 km
110 km
400 km
1100 km

⇒ The threshold voltage of an n-channel enhancement mode MOSFET is 0.5 when the device is biased at a gate voltage of 3V. Pinch off would occur at a drain voltage of
1.5 V
2.5 V
3.5 V
4.5 V

⇒ Figure shows a Wheatstone bridge with RTD to one arm. If resistance of RTD = 1020 Ω, the voltage V₀
49 mV
51 mV
48 mV
45 mV

⇒ Two meters X and Y require 40 mA and 50 mA for full scale deflection. Then
X is more sensitive
Y is more sensitive
both are equally sensitive
it is not possible to determine from given data

⇒ In a TWT the phase velocity of the axial component of the field on the slow wave structure is kept
equal to velocity of electron
slightly less than velocity of electron
slightly more than velocity of electron
equal to velocity of light in free space

⇒ FET amplifier is more difficult to analyse than BJT amplifier.
TRUE
FALSE

⇒ Companding is used in PCM to
reduce bandwidth
increasing S/N ratio
get almost uniform S/N ratio
increase bandwidth