BASIC ELECTRICAL PART 9
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Attempt Free BASIC ELECTRICAL PART 9 Here. Read The Important Electrical MCQ From Below.
A. Watt
B. Ampere-hour
C. Coulomb
D. Volt
Answer
[2] The peak voltage in an ac wave is always
A. Greater than the average voltage
B. Less than the average voltage
C. Greater than or equal to average voltage
D. Less than or equal to the average voltage
Answer
BASIC ELECTRICAL PART 9
[3] When an electrical charge exists but there is no flow of current, the charge is said to be
A. Ionizing
B. Electronic
C. Static
D. Atomic
Answer
[4] As the number of turns in a coil that carries ac increases without limit, the current in the coil will
A. Eventually become very large
B. Stay the same
C. Decrease, approaching zero
D. Be stored in the core material
Answer
BASIC ELECTRICAL PART 9
[5] As the number of turns in a coil increases, the reactance at a constant frequency
A. Increases
B. Decreases
C. Stays the same
D. Is stored in the core material
Answer
[6] In an RL circuit, as the ratio of inductive reactance to resistance (XL/R) decreases, the phase angle
A. Increases
B. Decreases
C. Stays the same
D. Becomes alternately positive and negative
Answer
BASIC ELECTRICAL PART 9
[7] The best filter for a power supply is
A. A capacitor in series
B. A choke in series
C. A capacitor in series and a choke in parallel
D. A capacitor in parallel and a choke in series
Answer
[8] Voltage regulation can be achieved by a zener diode connected in
A. Parallel with the filter output, forward biased
B. Parallel with the filter output, reverse biased
C. Series with the filter output, forward biased
D. Series with the filter output, reverse biased
Answer
[9] A current surge takes place when a power supply is first turned on because
A. The transformer core is suddenly magnetized
B. The diodes suddenly start to conduct
C. The filter capacitor must be initially charged
D. Arching takes place in the power switch
Answer
BASIC ELECTRICAL PART 9
[10] A dc electromagnet
A. Has constant polarity
B. Requires an air core
C. Cannot be used to permanently magnetize anything
D. Does not attract or repel permanent magnet
Answer
[11] In a multi-stage RC coupled amplifier the coupling capacitor______________
Answer
BASIC ELECTRICAL PART 9
[12] It is required to measure temperature in the range of 13000 deg C to 15000 deg c. The most suitable thermocouple to be used as a transducer would be?
b) Iron – constantan
c) Chromel – alumel
d) Platinum- rhodium
Answer
[13] Telemetering is a method of?
a) Counting pulses sent over long distances
b) Transmitting pictures from one place to another
c) Transmitting information concerning a process over a distance
d) None
Answer
[14] A dc to dc converter having an efficiency of 80% is delivering 16W to a load. If the converter is generating an output of 200V from an input source of 20V, then the current drawn from the source will be?
a) 0.1A
b) 0.5A
c) 1.0A
d) 10.0A
Answer
BASIC ELECTRICAL PART 9
[15] The location of lighting arrestor is?
a) Near the transformer
b) Near the circuit breaker
c) Away from the transformer
d) None
Answer
