Q1. Name the three leads of a common transistor
(A) Emitter Collector Bias
(B) Base Collector Case
(C) Collector Bias Emitter
(D) Collector Base Emitter


Q2. Input impedance of FET is
(A) Low
(B) High
(C) zero
(D) None of these


Q3. To obtain a higher value of resistance, resistors are connected in:
(A) Series
(B) Parallel
(C) Reverse
(D) Forward


Q4. A capacitor and coil in parallel is called:
(A) A Timing Circuit
(B) A Delay Circuit
(C) A Schmitt Circuit
(D) A Tuned Circuit


Q5. Which of the following amplifier is used in a digital to analog converter?
(A) voltage follower
(B) non inverting
(C) difference amplifier
(D) summing amplifier


Q6. Differential amplifiers are used in
(A) voltage followers
(B) buffer
(C) instrumentation amplifiers
(D) All of these


Q7. If a 10k resistor is placed across a 100v supply, the current will be:
(A) 1mA
(B) 10mA
(C) 0.01mA
(D) 0.1mA


Q8. For the XOR gate, what is the output when both inputs are HIGH:
(A) LOW
(B) HIGH
(C) Can be HIGH or LOW
(D) Cannot be determined


Q9. The gain of a transistor amplifier falls at high frequencies due to the
(A) Coupling capacitor at the output
(B) Ground Effect
(C) Internal Capacitance of the device
(D) Skin effect


Q10. Class AB operation is often used in power amplifiers in order to
(A) get maximum efficiency
(B) Remove harmonics
(C) Overcome a crossover distortion
(D) reducing collector dissipation


Q11. For the XOR gate, what is the output when both inputs are LOW:
(A) HIGH
(B) LOW
(C) Can be HIGH or LOW
(D) Cannot be determined


Q12. For the XOR gate, what is the output when only one of the inputs is HIGH:
(A) HIGH
(B) LOW
(C) Can be HIGH or LOW
(D) Cannot be determined


Q13. A DC voltage :
(A) increases
(B) is a sinusoidal wave
(C) remains constant
(D) rises and then falls


Q14. Expand CRO:
(A) Capacitor Resistor Oscillator
(B) Cathode Ray Oscilloscope
(C) Cathode Ray Oscillator
(D) Capacitor Ray Oscillator


Q15. JFET in its equivalent circuit can be represented as a
(A) Voltage controlled Current source
(B) Voltage controlled Voltage source
(C) Current controlled Voltage source
(D) Current controlled Current source


Q16. The tolerance bands: gold; silver; red, represent:
(A) 5%, 10%, 1%
(B) 5%, 10%, 2%
(C) 10%, 5%, 1%
(D) 10%, 5%, 2%


Q17. The tolerance bands: gold; silver; brown, represent:
(A) 5%, 10%, 1%
(B) 5%, 10%, 2%
(C) 10%, 5%, 1%
(D) 10%, 5%, 2%


Q18. 223 on a capacitor represents:
(A) 0.022microfarad
(B) 22,000 picofarad
(C) 22 nanofarad
(D) None of these


Q19. The current requirement of a LED is:
(A) 1.7mA
(B) 25mA
(C) 50mA
(D) Between 3 and 35mA


Q20. When a step input is given to an op-amp integrator, the output will be
(A) ramp
(B) sinusoidal
(C) rectangular
(D) triangular


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