multtiple choices

electronics questions

32)In an op amp -------- is the maximum rate of change of output voltage
a) input bias current b) slew rate c) CMRR d) NONE
33) ----------- is the input voltage which must be applied across the input terminals of an op amp to obtain zero input voltage
a)input offset voltage b) input bias current  c)slew rate d) NONE
34) in an ideal op amp input impedance is ---------------
a) zero b) infinite c)finite d) none
35)a ---------- is a semiconductor device that converts light into current
a)LDR b)photodiode c) optocoupler d) phototransistor
36) universal flipflop is ------------
a) JK flipflop b) D flipflop c)SR flipflop d)T flipflop
37)the 2 possible states of multivibrators  are
a)Q1 on Q2 OFF  b) Q1 OFF Q2 on c) both a and b  d) Q1 ON Q2 on
38)------------ is a digital circuit that is able to count the number of pulses that are applied to its input terminals
a) counter b) flipflop c) logic gate d0 none
39)transistor biasing represents -----------
A)ac  b)dc c) both ac and dc d) none
40)An oscillator differs from an amplifier because it -------------
a) has more gain b) requires no input signal c) requires no dc supply d0 none
41) emitter follower is used for ----------
a) Current gain b) impedance matching c) voltage gain d) none
42)the output impedance of emitter follower is
a) high b) very high c) slightly d) low
43)the collector of a transistor is --------- doped
a)moderately b) highly c)slightly d)none
44)to shift waveform either above or below a given voltage without destroying the waveform
a) clipper b) clamper c)integrater d) differentiar

45)diode and resisters are required for
a) clipper ckt  b)clamper ckt  c) integrater d) differentiar
46)An example of a weighted code
a)BCD  b)ASCII c) Excess 3 code d) grey code
47) ----------is the uncertainity of output state , when clock pulse is too large
a)race around condition b) overflow c) propagation delay d)none
48)the radix\base of a octal number system is
a)2  b) 4  c)8  d) 16
49)the binary equalent to decimal number 12is -----------
a)1011 b)1100  c)1101  d)1010
50)LED is a ----------------
a)transistor b) DIAc c) diode d) UJT