Users Also Read
MCQ's Search Engine
Electrical Engineering
Mechanical Engineering
Civil Engineering
Automobile Engineering
Chemical Engineering
Computer Engineering
Electronics Engineering
Medical Science Engg
8255 A is a | |
A. | programmable peripheral interface [Correct Answer] |
B. | I/O device [Wrong Answer] |
C. | memory chip [Wrong Answer] |
D. | none of the above [Wrong Answer] |
View Answer
Explanation:-
Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
Also Read Similar Questions Below :
⇒ Which quantity controls the effectiveness of LED in emitting light?
Applied voltage
Current
Extent of doping
Temperature
⇒ The minimum gate source voltage that creates the n-type inversion layer is called
cut off voltage
on voltage
threshold voltage
zener voltage
⇒ Decimal number 5436 when converted into 9's complement will become
4356
4653
4563
4655
⇒ For air filled circular waveguides
the attenuation due to imperfect conducting walls is negligible
the attenuation due to imperfect dielectric is negligible
both the attenuation i.e. due to imperfect conducting walls and due to imperfect dielectric are significant
the total attenuation is almost zero
⇒ The inverse response of a system h(n) = a^{n}∪(n) what is the condition for the system to be BIBO stable?
a is real and +ve
a is real and -ve
|a| > 1
|a| < 1
⇒ Current in a 2H inductance in 10e^{-t} A. Admittance of the inductor is
-0.5 mho
0.5 mho
5 mho
10 mho
⇒ An R-C coupled amplifier has mid-frequency gain of 200 and a frequency response from 100 Hz to 20 kHz. A negative feedback network with β = 0.2 is incorporated into the amplifier circuit, the Bandwidth will be
50 kHz
20 kHz
100 kHz
infinite
⇒
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
⇒ For stable network, the real part of poles and zeros of driving point function must be
negative
negative or zero
zero
positive
⇒ Consider a silicon p-n junction at room temperature having the following paramet
0.15 MV.com^{-1}, directed from p-region to n-region
0.15 MV.com^{-1}, directed from n-region to p-region
1.80 MV.com^{-1}, directed from p-region to n-region
1.80 MV.com^{-1}, directed from n-region to p-region
⇒ IC (instruction cycle), FC (fetch cycle) and EC (executive cycle) are related as
IC = FC - EC
IC = FC + EC
IC = FC + 2EC
EC = IC + EC
⇒ Which of the following can be used to convert PPM into PWM?
Integrator
Astable multivibrator
Bistable multivibrator
Monostable multivibrator
⇒ A TTL circuit with totem pole output has
high output impedance
low output impedance
very high output impedance
none of the above
⇒ In a resistance strain gauge, G = 2, stress = 1050 kg/cm^{2}, R = 1000 Ω. The value of ΔR will be
2 Ω
3 Ω
4 Ω
1 Ω
⇒ In a bipolar transistor, the emitter base junction has
forward bias
reverse bias
zero bias
zero or reverse bias
⇒ A signal g(t) = A then g(t) is a
energy signal
power signal
neither energy nor power signal
insufficient data
⇒ If figure, I = 2A if R = 20 Ω. When R = 10 Ω current I
0.0416666666666667
0.0833333333333333
2.5 A
0.125
⇒ A circular sphere mile is the area of cross-section of a wire
having a diameter equal to 1 miles
having a radius equal to 1 miles
having a circumference equal to 1 miles
none of the above
⇒ FM amplifier in a superheterodyne receiver
increases selectivity
suppresses noise
provides improved tracking
improves the rejection of the image frequency
⇒ The tuned circuit of the oscillator in a simple AM transmitter employs a 50 H coil and a 1 nanofarad capacitor. If the oscillator output is the carrier frequency will be
448 kHz
555 kHz
625 kHz
712 kHz
⇒
A-1, B-2, C-3, D-4
A-3, B-1, C-2, D-4
A-2, B-3, C-4, D-1
A-4, B-1, C-2, D-3
⇒ For an P-channel enhancement type MOSFET determine the drain current if K = 0.278 x 10^{-3}A/V^{2}, V_{GS} = -4V, V_{T} = -2V, Voltage equivalent at 27°C = 26 mV.
10 mA
1.11 mA
0.751 mA
46.98 mA
⇒ The ideal op-amp has the following characteristics
R_{i} = ∞, A = ∞, R_{0} = 0
R_{i} = 0, A = ∞, R_{0} = 0
R_{i} = ∞, A = 0, R_{0} = 0
R_{i} = 0, A = ∞, R_{0} = ∞
⇒ In a pulsed RADAR typical value of pulse duration and pulse frequency respectively are
1 μs and 50 Hz
1 μs and 500 Hz
4 μs and 50 Hz
4 μs and 500 Hz
⇒ In a half wave voltage doubler circuit the input frequency is 50 Hz. The ripple frequency is
25 Hz
50 Hz
100 Hz
150 Hz
⇒ The units of the spectrum obtained be Fourier transforming the covariance function of a stationery Stochastic Process is
Power per Hz
energy per Hz
Power per sec
Energy per second
⇒ Calculate the conductivity of pure silicon at room temperature when the concentration of carriers is 1.6 x 10^{10} per cm^{3}. Take μ_{e} = 1500 cm^{2}/V-sec, μ_{h} = 500 cm^{2}/V-sec at room temperature,
5.12 x 10^{-16}
5 x 10^{+16}
10^{16}
5 x 10^{20}
⇒ The common-drain amplifier, better known as the source follower, has a voltage gain __________ and the output signal is __________ with the input signal.
approaching unity, in phase
approaching unity, out of phase
is very high, in phase
is very high, in reverse phase
⇒ Which of the following microphones works on the piezoelectric effect?
Carbon
Condenser
Moving coil
Crystal
⇒ An angle modulated signal is given by s(t) = cos 2p (2 x 10^{6}t + 30 sin 150t + 40 cos 150t). The maximum frequency and phase deviations of s(t) are
10.5 kHz, 140p rad
6 kHz and 80p rad
10.5 kHz, 100p rad
7.5 kHz, 100p rad
⇒ Which quantity controls the effectiveness of LED in emitting light?
Applied voltage
Current
Extent of doping
Temperature
⇒ The minimum gate source voltage that creates the n-type inversion layer is called
cut off voltage
on voltage
threshold voltage
zener voltage
⇒ Decimal number 5436 when converted into 9's complement will become
4356
4653
4563
4655
⇒ For air filled circular waveguides
the attenuation due to imperfect conducting walls is negligible
the attenuation due to imperfect dielectric is negligible
both the attenuation i.e. due to imperfect conducting walls and due to imperfect dielectric are significant
the total attenuation is almost zero
⇒ The inverse response of a system h(n) = a^{n}∪(n) what is the condition for the system to be BIBO stable?
a is real and +ve
a is real and -ve
|a| > 1
|a| < 1
⇒ Current in a 2H inductance in 10e^{-t} A. Admittance of the inductor is
-0.5 mho
0.5 mho
5 mho
10 mho
⇒ An R-C coupled amplifier has mid-frequency gain of 200 and a frequency response from 100 Hz to 20 kHz. A negative feedback network with β = 0.2 is incorporated into the amplifier circuit, the Bandwidth will be
50 kHz
20 kHz
100 kHz
infinite
⇒
Assertion (A): In p-n-p transistor collector current is termed negative.
Reason (R): In p-n-p transistor holes are majority carriers.
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
⇒ For stable network, the real part of poles and zeros of driving point function must be
negative
negative or zero
zero
positive
⇒ Consider a silicon p-n junction at room temperature having the following paramet
0.15 MV.com^{-1}, directed from p-region to n-region
0.15 MV.com^{-1}, directed from n-region to p-region
1.80 MV.com^{-1}, directed from p-region to n-region
1.80 MV.com^{-1}, directed from n-region to p-region
⇒ IC (instruction cycle), FC (fetch cycle) and EC (executive cycle) are related as
IC = FC - EC
IC = FC + EC
IC = FC + 2EC
EC = IC + EC
⇒ Which of the following can be used to convert PPM into PWM?
Integrator
Astable multivibrator
Bistable multivibrator
Monostable multivibrator
⇒ A TTL circuit with totem pole output has
high output impedance
low output impedance
very high output impedance
none of the above
⇒ In a resistance strain gauge, G = 2, stress = 1050 kg/cm^{2}, R = 1000 Ω. The value of ΔR will be
2 Ω
3 Ω
4 Ω
1 Ω
⇒ In a bipolar transistor, the emitter base junction has
forward bias
reverse bias
zero bias
zero or reverse bias
⇒ A signal g(t) = A then g(t) is a
energy signal
power signal
neither energy nor power signal
insufficient data
⇒ If figure, I = 2A if R = 20 Ω. When R = 10 Ω current I
0.0416666666666667
0.0833333333333333
2.5 A
0.125
⇒ A circular sphere mile is the area of cross-section of a wire
having a diameter equal to 1 miles
having a radius equal to 1 miles
having a circumference equal to 1 miles
none of the above
⇒ FM amplifier in a superheterodyne receiver
increases selectivity
suppresses noise
provides improved tracking
improves the rejection of the image frequency
⇒ The tuned circuit of the oscillator in a simple AM transmitter employs a 50 H coil and a 1 nanofarad capacitor. If the oscillator output is the carrier frequency will be
448 kHz
555 kHz
625 kHz
712 kHz
⇒
Match the following:
List I (BHE, A0) | List II (Word is read/write) | ||
---|---|---|---|
A. | 0, 0 | 1. | 1 byte from/to odd address |
B. | 0, 1 | 2. | 1 byte from/to even address |
C. | 1, 0 | 3. | 16 bit word |
D. | 1, 1 | 4. | None |
A-1, B-2, C-3, D-4
A-3, B-1, C-2, D-4
A-2, B-3, C-4, D-1
A-4, B-1, C-2, D-3
⇒ For an P-channel enhancement type MOSFET determine the drain current if K = 0.278 x 10^{-3}A/V^{2}, V_{GS} = -4V, V_{T} = -2V, Voltage equivalent at 27°C = 26 mV.
10 mA
1.11 mA
0.751 mA
46.98 mA
⇒ The ideal op-amp has the following characteristics
R_{i} = ∞, A = ∞, R_{0} = 0
R_{i} = 0, A = ∞, R_{0} = 0
R_{i} = ∞, A = 0, R_{0} = 0
R_{i} = 0, A = ∞, R_{0} = ∞
⇒ In a pulsed RADAR typical value of pulse duration and pulse frequency respectively are
1 μs and 50 Hz
1 μs and 500 Hz
4 μs and 50 Hz
4 μs and 500 Hz
⇒ In a half wave voltage doubler circuit the input frequency is 50 Hz. The ripple frequency is
25 Hz
50 Hz
100 Hz
150 Hz
⇒ The units of the spectrum obtained be Fourier transforming the covariance function of a stationery Stochastic Process is
Power per Hz
energy per Hz
Power per sec
Energy per second
⇒ Calculate the conductivity of pure silicon at room temperature when the concentration of carriers is 1.6 x 10^{10} per cm^{3}. Take μ_{e} = 1500 cm^{2}/V-sec, μ_{h} = 500 cm^{2}/V-sec at room temperature,
5.12 x 10^{-16}
5 x 10^{+16}
10^{16}
5 x 10^{20}
⇒ The common-drain amplifier, better known as the source follower, has a voltage gain __________ and the output signal is __________ with the input signal.
approaching unity, in phase
approaching unity, out of phase
is very high, in phase
is very high, in reverse phase
⇒ Which of the following microphones works on the piezoelectric effect?
Carbon
Condenser
Moving coil
Crystal
⇒ An angle modulated signal is given by s(t) = cos 2p (2 x 10^{6}t + 30 sin 150t + 40 cos 150t). The maximum frequency and phase deviations of s(t) are
10.5 kHz, 140p rad
6 kHz and 80p rad
10.5 kHz, 100p rad
7.5 kHz, 100p rad