Q.1
A bistable multivibrator has ___________.
Q.2
A monostable vibrator has ___________.
Q.3
A switch has ___________.
Q.4
A relay is superior to a mechanical switch because it ___________.
Q.5
If you need to switch very small load currents or high frequency signals such as audio or video signals, which type of relay will you choose
  • Electromechanical Relay
  • Solid State Relay
Q.6
If you need faster response and long life, which type of relay will you choose
  • Electromechanical Relay
  • Solid State Relay
Q.7
Solid state relays have only one moving part which helps in switching between “ON” and “OFF” position.
  • True
  • False
Q.8
Electromechanical relays face high arching problems as it has moving parts
  • True
  • False
Q.9
Solid state relays face high arching problems as it has moving parts
  • True
  • False
Q.10
Electromechanical Relays have a
  • coil and contact arrangement
  • optocoupler
  • SCR
  • none of the above
Q.11
Solid State Relays (SSRs) have a
  • coil and contact arrangement
  • optocoupler
  • SCR
  • none of the above
Q.12
A phototransistor produces more current than a photodiode because - (Choose an answer to complete this sentence)
  • the phototransistor can be more heavily doped than the photodiode.
  • the photo transistor accepts a wider spectrum of light than the photodiode.
  • the current produced by photons is amplified by the hfe (gain) of the transistor.
  • the photodiode is normally used in low light conditions.
Q.13
The disadvantage/s of a mechanical switch is that it………….
  • is noisy
  • has moving parts
  • has high inertia/slow
  • All of the above
Q.14
What do you mean by Solid State Relay (SSR)?
  • electronic switching device
  • complete state
  • motion
  • none of the above
Q.15
A relay is a/an ……….. switch
  • mechanical
  • electronic
  • electromechanical
  • none of the above
Q.16
The switch that has the fastest speed of operation is ………….. switch
  • mechanical
  • electronic
  • electromechanical
  • none of the above
Q.17
An LED and phototransistor is equivalent to a/an
  • Thermocouple
  • FET
  • Optocoupler
  • Regulator
Q.18
Optocoupler is otherwise known as
  • Laser
  • Photodiodes
  • Opto- isolator
  • Photoconductive cell
Q.19
The prosche Taycan has a battery that is how many volts?
  • 350
  • 600
  • 700
  • 800
Q.20
What is the job of a converter in an electric car?
  • convert AC to DC
  • Convert high DC to Lower DC
  • Convert Low DC to Higher DC
  • Control motor speed
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