Govt Exams Mock Test FREE | Online Quiz Competition

Q1. The phenomena known as "Early effect" in a bipolar transistor refers to reduction of effective base-width caused by

Electron - hole recombination at base

The reverse biasing of the base - collector junction is

The forward biasing of emitter - base region

The early removal of stored base charge during saturation to cut-off switching

Q2. 7805 IC is a

CMOS X-OR IC

3 - Terminal Voltage Regulator

TTL NOR Gate IC

TTL NAND Gate IC

Q3. An FM receiver has an IF frequency that is

88MHz-108MHz range

540kHz-1640kHz range

455kHz

10.7MHz

Q4. Ripple frequency of the output waveform of a bridge rectifier when fed with a 50 Hz sine wave is

100 Hz

25 Hz

50 Hz

None of the above

Q5. Schottky diodes are

Al(Aluminium) in contact with heavily doped n type Si(Silicon)

Al(Aluminium) in contact with lightly doped n type Si(Silicon)

Ordinary p-n junction diode

None of the above

Q6. The output expression ‘F’ for the combinational logic circuit shown in Fig. is given by

\(F=\overline{A}\)

\(F=B\)

\(F=\overline{B}\)

\(F=A\)

Q7. The binary number 110001.101 is equivalent to decimal number

59.265

44.32

49.625

61.5

Q8. What is the gray code for the binary \(110101\)?

\(101111\)

\(011111\)

\(011001\)

\(111010\)

Q9. It is desired to design a binary ripple counter, capable of counting the number of items passing on a conveyor belt. Each time an item passes a given point, a pulse is generated that can be used as a clock input. If the maximum number of items to be counted is 3000, determine the number of flip-flops required.

12

11

10

13

Q10. The output Y of the logic circuit shown in Fig. is _______ .

\(Y=A\)

\(Y=\overline{A}\)

\(Y=1\)

\(Y=0\)

Quiz

Year 2024

November
Week # 3 Quiz 4

Q1. The phenomena known as "Early effect" in a bipolar transistor refers to reduction of effective base-width caused by

Q2. 7805 IC is a

Q3. An FM receiver has an IF frequency that is

Q4. Ripple frequency of the output waveform of a bridge rectifier when fed with a 50 Hz sine wave is

Q5. Schottky diodes are

Q6. The output expression ‘F’ for the combinational logic circuit shown in Fig. is given by

Q7. The binary number 110001.101 is equivalent to decimal number

Q8. What is the gray code for the binary \(110101\)?

Q10. The output Y of the logic circuit shown in Fig. is _______ .

Quiz

Year 2024

October Week # 1 Expire on 31 Oct 2024

October Week # 2 Expire on 07 Nov 2024

October Week # 3 Expire on 14 Nov 2024

October Week # 4 Expire on 21 Nov 2024

November Week # 3 Quiz 4

Q1. The phenomena known as "Early effect" in a bipolar transistor refers to reduction of effective base-width caused by

Q2. 7805 IC is a

Q3. An FM receiver has an IF frequency that is

Q4. Ripple frequency of the output waveform of a bridge rectifier when fed with a 50 Hz sine wave is

Q5. Schottky diodes are

Q6. The output expression ‘F’ for the combinational logic circuit shown in Fig. is given by

Q7. The binary number 110001.101 is equivalent to decimal number

Q8. What is the gray code for the binary \(110101\)?

Q10. The output Y of the logic circuit shown in Fig. is _______ .

Record & Track Your Performance

November
Week # 3 Quiz 4