Question is ⇒ The output data lines of microprocessor and memories are usually tristated because, Options are ⇒ (A) more than one device can transmit information over the data bus by enabling only one device at a time, (B) more than one device can transmit information over the data bus at the same time, (C) the data lines can be multiplexed for both I/P and O/P, (D) it increases the speed of data transfers over the data bus, (E) , Leave your comments or Download question paper.

Question is ⇒ The output data lines of microprocessor and memories are usually tristated because, Options are ⇒ (A) more than one device can transmit information over the data bus by enabling only one device at a time, (B) more than one device can transmit information over the data bus at the same time, (C) the data lines can be multiplexed for both I/P and O/P, (D) it increases the speed of data transfers over the data bus, (E) , Leave your comments or Download question paper. Previous question Next question


Q1.	The output data lines of microprocessor and memories are usually tristated because
A.	more than one device can transmit information over the data bus by enabling only one device at a time [Correct Answer]
B.	more than one device can transmit information over the data bus at the same time [Wrong Answer]
C.	the data lines can be multiplexed for both I/P and O/P [Wrong Answer]
D.	it increases the speed of data transfers over the data bus [Wrong Answer]
View Answer 2 -2 Explanation:- Answer : A 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 :

⇒ In a klystron amplifier the input cavity is called
buncher
catcher
Pierce gun
collector

⇒ D/A converters are generally
weighted resistor network
binary ladder network
either (a) or (b)
neither (a) nor (b)

⇒ In a series regulated power supply circuit the voltage gain of pass transistor satisfies the condition
A_v → ∞
1 << A_v → ∞
A_v ≈ 1
A_v << 1

⇒ A PIN diode can be used
as a shunt mounted switch
as a series mounted switch
both as series or shunt mounted switch
non of the above

⇒ In figure, the current through 2 Ω resistanc
zero
-2A
2A
1A

⇒ For a 12 pulse operation, the two 6 pulse units are fed by
Y - Y and Y - Y transformers
Δ - Δ and Δ - Δ transformers
Y - Y and Y - Δ transformers
Y - Δ and Y - Δ transformers

⇒ In open circuit impedance parameters, the independent variables are
I₁ and I₂
V₁ and V₂
V₁ and I₁
V₂ and I₂

⇒ When the emitter current of a transistor is changed by 1 mA, its collector current changes by 0.990 mA. The common-emitter short-circuit current gain is
1
199
99
9.9

⇒ A constant k high pass p section has a characteristic impedance of 300 Ω at f = ∞ . At f = f_c, the characteristic impedance will be
zero
∞
300 Ω
more than 300 Ω

⇒ In 8085, the pairing of registers B, C, D, E, H, L is
B - C, D - E, H - L
B - D, C - E, H - L
B - C, D - L, H - E
B - H, D - E, C - L

⇒ The efficiency of using a binary system for selection of 1 out of 13 equally probable events is
1
about 92%
about 83%
about 71%

⇒

Assertion (A): In a BCD to 7 segment decoder the number of outputs active at one time is always the same.

Reason (R): A decoder can be used to interface BCD input to LED display.

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

⇒ Two sinusoidal waves 1 and 2 have peak values V_m1 and V_m2. Wave 1 is leading wave 2 by ∠θ. Which of the following is correct?
v₁ = V_m1 sin θ and v₂ = V_m2 cos θ
v₁ = V_m1 sin ωt and v₂ = V_m2 sin (ωt - θ)
v₁ = V_m1 sin (ωt + θ/2) and v₂ = V_m2 sin ωt
none of the above

⇒ In telephone systems the relation between load r, number of calls initiated during a specified interval λ and average duration of a call (h) is
r = λh
r = λh²
λ = rh
h = λr

⇒ The minority carrier life time and diffusion constant in a semiconductor material are respectively 100 microsecond and 100 cm²/sec. The diffusion length is
0.1 cm
0.01 cm
0.0141 cm
1 cm

⇒ The derating factor for a BJT transistor is about
0.5 mW/°C
2.5 mW/°C
10 mW/°C
25 mW/°C

⇒ In a channel voice coder, the outputs of sixteen 20 Hz low pass filters are sampled, multiplexed and A/D converted. If sampling is at 40 samples/second and 3 bits/sample represents each voltage sample, the bit rate is about
1.9 k bits/sec
0.95 k bits/sec
3.8 k bits/sec
7.6 k bits/sec

⇒ In a broadcast superheterodynes receiver having no RF amplifier, the loaded Q of the antenna coupling circuit is 100. If the intermediate frequency is 455 kHz. The rejection ratio at 25 MHz will be
1.116
1.386
2.116
2.386

⇒ The coupling capacitor in amplifier circuits
affects dc biasing
does not affect dc biasing
affects dc biasing to some extent
both (a) and (c)

⇒ The degree of the nodes 1, 2, 3,
2
3
2 for 1, 2, 3, and 3 for 4
all 3

⇒ The maximum theoretical efficiency for class A amplifier is
0.125
0.25
0.5
0.75

⇒ In a stereo tape recorder the speed of the tape is
38 m/s
19 m/s
9.5 m/s
4.75 m/s

⇒ When a series RL circuit is switched on to a dc voltage, the rate of change of current is maximum at t = 0.
TRUE
FALSE

⇒ A voltage tripler circuit and voltage quadrupler circuit use identical components. Then
voltage regulation in both circuits will be same
voltage regulation in both may or may not be same
voltage regulation in quadrupler circuit will be better than in tripler circuit
voltage regulation in quadrupler circuit will be poorer than in tripler circuit

⇒ A constant k high pass filter has f_c = 3000 Hz. At f = 1000 Hz, the phase shift is
zero
p
2 p
more than p

⇒ The mean free path of conduction electrons in copper is about 4 x 10^-8 m. For a copper block, find the electric field which can give, on an average, 1 eV energy to a conduction electron
2.62 x 10⁷ V/m
2.64 x 10⁷ V/m
2.5 x 10⁷ V/m
2.58 x 10⁷ V/m

⇒ Which of the following microphones has bidirectional feature?
Moving coil
Ribbon
Condenser
Carbon

⇒ Which of the following statements is correct?
Convex lens has positive focal power and concave lens have negative focal power
Convex lens has negative focal power and concave lens have positive focal power
All lens have positive focal power
All lens have negative focal power

⇒ Silicon diodes have __________ reverse resistance than germanium diodes.
a much smaller
a much larger
an infinite
a negligible

⇒ A sheet of bakelite is inserted between the plates of an air capacitor. The capacitance will
increase
decrease
remain the same
may increase or decrease