An OP-AMP comparator is a circuit that compares the signal voltage on one of its inputs with a ______________?

Related Mcqs:

1. n an LCR series circuit, if V is the effective value of the applied voltage VR is the voltage across R VL is the effective voltage across L & Vc is the effective voltage across C then_______________?

   IA. V = VR+VL+VC
   B. V2 = VR2+VL2+VC2
   C. V2 = VR2+(VL-VC)2
   D. V2 = VL2+(VR-VC)2

2. An inductive coil has a resistance of 100Ω. When an AC signal of frequency 1000Hz is fed to the coil the applied voltage leads the current by 45Ω. What is the inductance of the coil ?

   A. 10mH
   B. 12mH
   C. 16mH
   D. 20mH

3. If capacitance of L-C circuit is made four times then frequency of the circuit becomes___________________?

   A. Twice
   B. One half
   C. Four times
   D. None

4. An A.C series circuit containing 4Ω resistance and 3Ω inductive reactance. The impedance of the circuit is______________?

   A. 1Ω
   B. 5Ω
   C. 7Ω
   D. 7Ω

5. pure resistor circuit the voltage and current are_______________?

   A. Lagging each other
   B. They are at 90? phase difference
   C. They have zero phase difference
   D. No phase difference

6. The phase angle between the voltage and the current in an AC circuit consisting of a resistance is______________?

   A. Zero
   B. 45°
   C. 90°
   D. 180°

7. In optic fiber transmission system _____________ are used regenerate the dim light signal?

   A. Diodes
   B. Repeaters
   C. Laser
   D. Transformer

8. Medium which sends signal from source to destination is known as ________ ?

   A. Transmitter
   B. Transmission channel
   C. Receiver
   D. Hardware

   Submitted by: Rashid Mehmood

9. The device or circuit used for conversion of A.C. into D.C. is called_______________?

   A. An amplifier.
   B. A rectifier
   C. Filtering circuit
   D. Converter.

10. Forward current through a semi conductor diode circuit is due to____________?

    A. minority carriers
    B. majority carriers
    C. holes
    D. electron