Question is ⇒ LCD uses, Options are ⇒ (A) nematic crystals, (B) sematic crystals, (C) cholesteric crystals, (D) twisted nematic crystal, (E) , Leave your comments or Download question paper.

Question is ⇒ LCD uses, Options are ⇒ (A) nematic crystals, (B) sematic crystals, (C) cholesteric crystals, (D) twisted nematic crystal, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	LCD uses
A.	nematic crystals [Wrong Answer]
B.	sematic crystals [Wrong Answer]
C.	cholesteric crystals [Wrong Answer]
D.	twisted nematic crystal [Correct Answer]
View Answer 2 -1 Explanation:- Answer : D 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 :

⇒ Electric dipole moment is usually expressed in debye units. Here, 1 debye unit equals
3.33 x 10^-30 C-m
3.33 x 10^-30 C-m²
3.30 x 10^-10 C-m
3.33 x 10^-10 C-m²

⇒ A balanced modulator circuit uses
two identical diodes with same V-I characteristics
two triodes with different V-I characteristics
two diodes with different V-I characteristics
a diode and a triode

⇒ Which of the following characteristic are necessary for a sequential circuit?

It must have 6 gates
It must have feedback
Its output should depend on past value

Which of the above statements are correct?
1, 2, 3
1, 2
2, 3
1, 3

⇒ A 1 ms pulse can be converted into a 10 ms pulse by using which one of the following
An astable multivibrator
Stable multivibrator
A bistable multivibrator
A J-K flip-flop

⇒ At night D layer of ionosphere is absent.
TRUE
FALSE

⇒ To avoid creep in an energy meter
two shading bands are put on shunt magnet
two shading bands are put on series magnet
two holes are cut in the disc on opposite sides of spindle
the potential coil is made of very thin wire

⇒ The stage marked X in the architecture shown below of a two stage op-amp
Direct coupled amplifier
Buffer amplifier
Level shifter
Blocking oscillator

⇒ Generally op amp is used in
open loop
closed loop
cascaded loop
either (a) or (c)

⇒ The main disadvantage of the two-hole directional coupler is
poor directivity
narrow bandwidth
high standing wave ratio
low directional coupling

⇒

Assertion (A): δ(t - b) is an impulse occuring at t = b

Reason (R): Intergal of unit impulse gives unit step function.

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 true, R is false
A is false, R is true

⇒ In van der walls crystals, there exists a high degree of stability of the outer electron shell.
TRUE
FALSE

⇒ The resistivity of a semiconductor
increases as the temperature increases
decreases as the temperature increases
remains constant even when temperature varies
none of the above

⇒ The resistance of the circuit shown is figur
5 Ω
More than 6 Ω
More than 4 Ω
Between 6 and 7 Ω

⇒ A square in which each (i, j)^th element of matrix is equal to the negative of the conjugate complex of (j, i)^th element, is called
Hermitian matrix
Skew symmetric matrix
Conjugate anti-symmetric matrix
Skew-Hermitian matrix

⇒ It is possible to copy a file in the same directory.
TRUE
FALSE

⇒ Which mode is called dominant mode in rectangular wave guide?
TE₀₁
TE₁₁
TE₁₀
TE₂₀

⇒ For the network shown below, if V_D = 12 V and V_GSQ = - 2 V value of R_S wil
13.35 kΩ
3.35 kΩ
33.31 kΩ
3.95 kΩ

⇒ 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

⇒ The resistance values of a PIN diode under positive bias and negative bias respectively are about
a few ohms and a kilo ohms
about 100 ohms and 1000 ohms
about 0.1 ohm and 100 ohms
about 1000 ohms and 10000 ohms

⇒ Medium scale integration refers to ICs with
more than 12 but less than 30 gates on the same chip
more than 50 gates on the same chip
more than 20 but less than 100 gates on the same chip
more than 12 but less than 100 gates on the same chip

⇒ The general purpose register code for accumulator in 8085 is
111
0
1
1111

⇒ Which one of the following is digital?
Pulse code modulation
Pulse width modulation
Pulse frequency modulation
Pulse position modulation

⇒ In which one of the following types of analog to digital convertors the conversion time is practically independent of the amplitude of the analog signal?
The dual slope integrating type
Successive approximation type
Counter ramp type
Tracking type

⇒ In the above case the modulation index will be
9.6
28.8
57.6
100

⇒ To produce p type semiconductor we add
acceptor atoms
donor atoms
pentavalent impurity
trivalent impurity

⇒

Assertion (A): In intrinsic semiconductors, the charge concentration increases with temperature.

Reason (R): At higher temperatures, the forbidden energy gap in semiconductors is lower.

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

⇒ The hexadecimal number BBC7 is equivalent to decimal number
49761
46791
47691
49761

⇒ Piezoelectric effect can be used to measure
force
strain
acceleration
all of the above

⇒ The signal x(t) = A cos (ω₀t + φ) is
energy signal
power signal
energy Power
none

⇒ Which of the following integer expressions is incorrect in Pascal?
L div M + P
A * * B
A div B - C
A mod B