Question

Determine the period number of the ufk-4 cos(K+TT/2) discrete time signal! Select one: O A. 34 O D. Non periodic O E. 34/3 A coil (L 5 mH) is parallel connected to two serially connected resistors (6 kΩ and 4 k2). Calculate the time constant of the above two-pole! Select one: Ο Α.0.5s OC. 5 s Ο D. 0.5 με Ο Ε.0.5 Ms Consider the following sequential network: Z2 Di Ct ㄍ洼 S2 Q2 CLK Choose which function does this circuit implement. Select one: O A. Two bits synchronous counter width enable input O B. Two bits asynchronous counter ° C. Two bits shift register O D. None of the above Consider again the sequential network given in question 13: Z2 Di Q1 S2 Q2 Ct R2 CLK Mark only those statements, which are true in the case of this circuit. Select one or more: O a. This is a Mealy modell sequential network b. Z2 is always high when X is high This is a synchronous sequental network a Clock skew can not cause protlems when both ip- ops are negatve eage triggered The following circuit contains a 4 bit BCD counter with synchronous load and clear inputs. Currently, the QD. Qc. QB, QA outputs show the value 1000. What will be the value of these outputs during the next four clock cycles? LD 1EN CLK Select one: O A. 1001, 0000, 0001, 0010 O B. 0111, 0110, 1000, 0111 O C. 1001, 1010, 1010, 1011 O D. 0110, 0101, 010o, 0011 Consider the circuit below RI Vout R4 The Op. Amp. is ideal, (all of the parameters have extreme default values, 0 or ) Note that the next question is also about this circuit including the given parameters. Determine the a small signal input impedance! Rin? Select one: O A. 35 kΩ Consider again the circuit given in question 17: RI Vout Vin R4 The Op. Amp. is ideal, (all of the parameters have extreme default values, 0 or Determine the small signal voltage gain! VoutVin? Select one: O A. 1 O B.-3 O D. 3 O E. 2 O F-2 a + b a-b The quantity X is defined as follows: X where a and b are measured quantities. In our case, a 9, b 10, and both quantities are measured by a relative error of h-0.1%. Calculate the relative error of X by the probabilistic summation of the error components! Select one AX O A. 1.41% ○ B.AY=: 0.141% О с.--0.2% AX A periodic signal is measured by different voltmeters that measure the peak value, the absolute mean value and the root mean square (RMS) value of the signal. What kind of waveform is measured, if all the meters indicate the same voltage? Select one: OA. Any periodic waveform O B. Sinusoidal waveform O C. There is no such waveform O D. Symmetric square wave A noisy sinusoidal signal of a frequency of fx 9 kHz is measured. A lowpass filter with (SNR). The power of the noise is distributed in the 0 .1 MHz frequency band. The SNR at the output of the filter is SNR 40 dB. Determine the SNR if the cut-off frequency of the filter is increased to 100 kHz! Select one: O A. 40 dB OB. 50 dB O C. 30 dB D. 60 dB The clock rate of a counter is fo = 10 MHz, its relative error is ho = 10 ppm. The capacity of the counter (the largest number can be represented) is Nmax 220 Calculate the smallest frequency that can be measured by the instrument! Select one: OA. min 0.1 Hz B min 9.54 Hz C.fmin = 10 Hz D.in 0.105 Hz O A capacitor of Cx 10 nF is to be measured that is built in a metal case. The capacitor is measured by the four-wire method at a frequency of fm 100 kHz. The resistance of each measuring lead is Rs = 0.05 Ω. There are parasitic capacities between the pins of the measured capacitor and the case. Each parasitic capacity is Cp 100 pF. Calculate the relative error error of the impedance meter is ignored! lie of the measurement,if the Select one: 0 A, 0% O C. 0.5% O D. 0.6%

Answer 1

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