4. What type of application would use a photovoltaic cell?
5. A patient with blood group A needs transfusion of blood. If blood group A is not available which of the following blood group can be substituted without causing any damage to the patient?
6. The smallest amount of current that the cathode-anode can have, and still sustain conduction of an SCR is called the:
7. Once a DIAC is conducting, the only way to turn it off is with:
8. When was ‘Indira Gandhi Paryavaran Puraskar’ come to being?
9. The DIAC is a:
10. What type of application would use an injection laser diode?
11. The PUT (programmable unijunction transistor) is actually a type of:
12. A transducer's function is to:
13. The optically coupled isolator interrupter module is used to transfer switching information between two electrically isolated points.
14. A photodiode is a device that produces light.
15. To turn an SCR off, simply remove the gate voltage.
16. A thermistor is a semiconductor device that acts like a piezoresistive resistor.
17. A silicon-controlled rectifier (SCR) has 3 terminals labeled base, collector, and emitter.
18. The DIAC conducts in only one direction when gated on.
19. A DIAC is a bidirectional diode that has a symmetrical switching mode.
20. A transducer does not convert energy from one form to another.
21. A semiconductor using the hall effect will detect magnetic fields.
22. The silicon-controlled rectifier (SCR) is a three-layer device consisting of a gate, an anode, and a cathode.
23. The gate of a TRIAC can turn it on to have current flow in either direction.
24. SCRs are four-layer devices that are either fully conducting or not conducting.
25. A TRIAC will control AC voltage during the positive half cycle only.