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Signals-and-systems Questions Set 36:

Quiz Mode

If the Z-Transform of u_n is U(z), what is the value of the Z-Transform of aⁿu_n?

U(az)

U(z/a)

aU(z)

U(z)/a

Solution:

A system is time-invariant if a time-shift of the input signal results in the same time-shift of the output signal.

True

False

Not given

Null

Solution:

Some types of traps used in the video IF (Intermediate Frequency) amplifier of a color TV are:

Shunt traps

Series traps

Absorption traps

All of the above

Solution:

A signal is defined as any physical quantity that varies with time, space or any other independent variable.

Signal

System

Signals & systems

None of the above

Solution:

A pseudo-noise (PN) sequence is generated using a feedback shift register of length m=4. The chip rate is 10^7 chips per second. The PN sequence length is

Solution:

When the frequency of a sine wave voltage applied across a capacitor is increased, what happens to the current through the capacitor?

Increases

Decreases

Is zero

Remains the same

Solution:

A slow FH/MFSK system has the following parameters:

Number of bits per MFSK symbol = 4

Number of MFSK symbols per hop = 5

The processing gain of the system is

13.4 dB

37.8 dB

6 dB

26 dB

Solution:

A cordless telephone using separate frequencies for transmission in base and portable units is known as

half-duplex arrangement

duplex arrangement

either (a) or (b)

neither (a) nor (b)

Solution:

A DS/BPSK spread spectrum signal has a processing gain of 500. If the desired error probability is 10^-5 and the required SNR to obtain an error probability of 10^-5 for binary PSK is 9.5 dB, then the Jamming margin against a continuous tone jammer is

23.6 dB

17.5 dB

117.4 dB

109.0 dB

Solution:

If two, two-port networks, are connected such that the short circuit admittance matrix of the overall network is the sum of the short circuit admittance matrices of the individual networks, what type of connection is used?

Series connection

Parallel connection

Cascade connection

Both series and cascade connection

Signals-and-systems Questions Set 36:

If the Z-Transform of u_n is U(z), what is the value of the Z-Transform of aⁿu_n?

Solution:

A system is time-invariant if a time-shift of the input signal results in the same time-shift of the output signal.

Solution:

Some types of traps used in the video IF (Intermediate Frequency) amplifier of a color TV are:

Solution:

A signal is defined as any physical quantity that varies with time, space or any other independent variable.

Solution:

A pseudo-noise (PN) sequence is generated using a feedback shift register of length m=4. The chip rate is 10^7 chips per second. The PN sequence length is

Solution:

When the frequency of a sine wave voltage applied across a capacitor is increased, what happens to the current through the capacitor?

Solution:

A slow FH/MFSK system has the following parameters:

Number of bits per MFSK symbol = 4

Number of MFSK symbols per hop = 5

The processing gain of the system is

Solution:

A cordless telephone using separate frequencies for transmission in base and portable units is known as

Solution:

A DS/BPSK spread spectrum signal has a processing gain of 500. If the desired error probability is 10^-5 and the required SNR to obtain an error probability of 10^-5 for binary PSK is 9.5 dB, then the Jamming margin against a continuous tone jammer is

Solution:

If two, two-port networks, are connected such that the short circuit admittance matrix of the overall network is the sum of the short circuit admittance matrices of the individual networks, what type of connection is used?

Solution:

Related Question Sets:

Related Topics:

Signals-and-systems Questions Set 36:

If the Z-Transform of un is U(z), what is the value of the Z-Transform of anun?

Solution:

A system is time-invariant if a time-shift of the input signal results in the same time-shift of the output signal.

Solution:

Some types of traps used in the video IF (Intermediate Frequency) amplifier of a color TV are:

Solution:

A signal is defined as any physical quantity that varies with time, space or any other independent variable.

Solution:

A pseudo-noise (PN) sequence is generated using a feedback shift register of length m=4. The chip rate is 10^7 chips per second. The PN sequence length is

Solution:

When the frequency of a sine wave voltage applied across a capacitor is increased, what happens to the current through the capacitor?

Solution:

A slow FH/MFSK system has the following parameters: Number of bits per MFSK symbol = 4 Number of MFSK symbols per hop = 5 The processing gain of the system is

Solution:

A cordless telephone using separate frequencies for transmission in base and portable units is known as

Solution:

A DS/BPSK spread spectrum signal has a processing gain of 500. If the desired error probability is 10^-5 and the required SNR to obtain an error probability of 10^-5 for binary PSK is 9.5 dB, then the Jamming margin against a continuous tone jammer is

Solution:

If two, two-port networks, are connected such that the short circuit admittance matrix of the overall network is the sum of the short circuit admittance matrices of the individual networks, what type of connection is used?

Solution:

Related Question Sets:

Related Topics:

If the Z-Transform of u_n is U(z), what is the value of the Z-Transform of aⁿu_n?

A slow FH/MFSK system has the following parameters:

Number of bits per MFSK symbol = 4

Number of MFSK symbols per hop = 5

The processing gain of the system is