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F192209 Pages:5

Impedance inverter is
a) 2/2 line (b) 2/4 line c) 248 line (d) None of [16
above

For a rectangular slotted line waveguide in TE;9 mode, slot is cut in the middle 5

a) Maximum field (b) Current patternis ௦) Radiation is (d) All of the above
variation is in the not disturbed minimum at the
middle centre

The magnitude of the ‏بط‎ and Ey components are same in which type of polarisation?

a) Linear (b) Circular c) Elliptical (d) Perpendicular
Hexadecimal and BCD numbers of decimal number 43 are

a) B2,01000110 (b) 28, 0100 0011 ०) 28, 00110100 (9) 82, 0100 0100
How many 3-line-to-8-line decoders are required for a 1-01-32 decoder?

a) 1 b) 2 c) 4 ५) 8

The output of the 74 series of TTL gates is taken from a BJT in

a) totem pole and (b) either totem pole ०) common base (d) common
common or open collector configuration collector
collector configuration configuration
configuration

How many flip-flops are required to produce a divide-by-128 device?

a) 1 b) 4 c) 6 d) 7

What is the modulus of 3-bit Johnson’s counter

a) 3 0) 8 c) 6 d) None of the

above

Which mechanism allocates the binary value to the states in order to reduce the cost of the
combinational circuits?

a) State Reduction (b) State c) State (d) State Evaluation
Minimization Assignment

Noise Factor (F) and Noise Figure (NF) are related as

a) NF=10logio(F) ௫) ? = 10 1010) ௦) NF=10(F) (d) F=10(NF)

Find lower frequency component in AM wave, given that highest frequency component is
900KHz and bandwidth is 12KHz

a) 888KHz (b) 894 KHz c) 876 KHz (d) 897 KHz
What is the standard IF frequency for AM receivers?
a) 100 KHz (b) 1.07 MHz c) 455 KHz (d) 10.7 MHz

A balanced modulator produces
a) SSB (0) DSB-FC c) AM (d) DSB-SC

In a superheterodyne receiver, if F, and ٣٦ are the RF signal frequency and intermediate

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