Electrical measurements MCQ Quiz Hub

1. Phototubes are very quick in response to light.
True
False
all of the above
None of the mentioned

2. Photoconductors are made of _______
thick layer of semiconductor
thin layer of semiconductor
capacitive substrate
inductive substrate

3. When an open circuited pn junction is illuminated then _______
resistance increases
there is no effect
electron hole pairs are formed
capacitance increases

4. Optocoupler consists of a phototransistor and a led.
True
False
all of the above
None of the mentioned

5. Response time for gas-filled phototubes is _______
zero
intermediate
fast
slow

6. Reverse leakage current in a transistor _______
is affected by light
is not affected by light
increases with a decrease in pressure
decreases with increase in temperature

7. Electronic recorders are of _______
2 types
4 types
10 types
15 types

8. Non-electrical quantities are measured directly.
True
False
all of the above
None of the mentioned

9. A physical quantity is recorded to preserve the details.
True
False
all of the above
None of the mentioned

10. How many types of graphic recorders are there?
five
ten
three
one

11. Recorder is a _____
measuring instrument
voltage source
current divider
musical tool

12. Efficiency of a recorder is determined using ________
paper
chart
voltmeter
oscilloscope

13. In a strip chart recorder ____
biological quantity is measured
chemical quantity is measured
physical quantity is measured
no quantity is measured

14. Basic elements of a strip chart recorder are _____
chalk and board
pen and pencil
pencil and paper
pen and chart paper

15. How many types of tracing systems are used in graphical representation?
two
five
ten
one

16. A galvanometer based recorder works on the principle of ________
Van der Wall’s effect
D’Arsonval movement
Paschen effect
Azhimuthal quatum number