Pulse and Digital Circuits Mid - II, April - 2010

1.The relation between the slope error, displacement error and transmission error is
  • et = 2es = 8ed
  • ed = 2et = 8es
  • es = 2ed = 8et
  • es = 2et = 8ed
Answer: D
2.To get a saw-tooth out put waveform, the restoration time is
  • zero
  • rise time
  • storage time
  • infinity
Answer: A
3.In Miller time base generator, which of the following is used
  • an inverting amplifier with a gain of unity
  • an inverting amplifier with a gain of infinity
  • non-inverting amplifier with a gain of unity
  • non-inverting amplifier with a gain of infinity
Answer: B
5.The time during which the output increases linearly is called
  • sweep time
  • flyback time
  • return time
  • restoration time
Answer: A
6.The interval of time of transmission of a signal in a sampling gate is selected by means of
  • time delay
  • off time of gate
  • gating signal
  • source signal
Answer: C
7.The following all are disadvantages of unidirectional gate, except
  • interaction between the signal source and control voltage source
  • limited used of gate
  • slow rise of the control voltage
  • little time delay though the gate
Answer: D
8.Which of the following logic gives the complementary outputs?
  • DTL
  • RTL
  • TTL
  • ECL
Answer: D
9.The voltage at the input of a gate which causes a change in the state of the ouput from one logic level totheotheris
  • cut-in voltage
  • cut-off voltage
  • threshold voltage
  • peak voltage
Answer: C
10.The high state fan out of a gate is defined at when the
  • input is at logic ‘0’
  • input is at logic ‘1’
  • output is at logic ‘1’
  • output is at logic ‘0’
Answer: C
11.The time required by the sweep voltage to return to the initial value is called ______________
Answer: restoration time , return time or flyback time
12.Compensating networks used to improve the ____________ of bootstrap circuit
Answer: linearity
13.The output of a time-base generator is called ____________
Answer: sweep voltage
14.The range of synchronization decreases with _____________ of sync signal amplitude
Answer: decreasing
15.When generator with equal frequencies run in synchronism, the synchronization is said to be on a ______________________
Answer: one to one basis
16.Bidirectional sampling gates transmit signals in ____________
Answer: both the polarities
17.The sampling gate is used in sampling scope because the display consists of _________
Answer: samples of input waveform
18.The power required by the gate to operated with 50% duty cycle at a specified frequency is called _____________
Answer: power dissipation
19.High state nose margin of a gate is defined as ____________
Answer: VOH(min)-VIH(min)
20.The basic TTL gate is _____________
Answer: NAND gate