ECE :: Exam Questions Paper
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For the network shown below, determine fHi and fHO, if, r0 = ∞, Cbe = 36 Pf, Cbc = 4 Pf, Cce = 1 Pf, Cwo = 8 Pf, Cwi = 6 Pf
where Cwo = wiring capacitance at output side, Cwi = wiring capacitance at input side -
Complex pole in z-plane is as shown below. This is the pole diagram for __________ .
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Four messages band limited to W, W, 2W and 3W respectively are to be multiplex using Time Division Multiplexing (TDM). The minimum bandwidth required for transmission of this TDM signal is
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Which of the following terms are equivalent?
- A ⊕ B ⊕ C
- A ⊕ B ⊙ C
- A ⊙ B ⊕ C
- A ⊙ B ⊙ C
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An astable multivibrator circuit using IC 555 timer is shown below. Assume that the circuit is oscillating steadily
The voltage Vc across capacitor varies between -
The number of product terms in the minimized sum of product expression obtained through the following k map is (where "d" denotes don't care states)
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Vcc and 
Vcc. 
is
ea|t| e- jωt dt
eat e-jωt dt + 
e-ate-jωt dt
∴ 
.
then |A50| will be
(1 - 1002) 
(1 - 502) 
(1 - 1002) 
(1 - 502) 
= 0 
, 
-
= 
+
