MCQs with Explanatory Answers

Basic Electronics (MCQs With Explanatory Answers) Q1. Choose the below option in terms of ascending order of band gap energy Options Diamond, Graphite, Silicon Graphite, Silicon, Diamond Silicon, Graphite, Diamond Silicon, Diamond, Graphite Q2. Band gap Energy for Silicon and Germanium at Room Temperature (300°K) are ____ & ____ respectively: – 56eV, 1.1eV 72eV, 1.2eV 1eV, 0.72eV 1eV, 0.56eV Q3. …

Electrical & Electronics MCQs and Fill in the Blanks. With Explanatory Answers

Three Phase Induction Motors MCQs with Explanatory Answers 1. If the frequency of 3-phase supply to the stator of 3-phase induction motor is increased, then synchronous speed is ________? Increased Decreased Remain unchanged None of the above

Battery: Batteries MCQs with Explanatory Answers 1. These batteries have connected in ___________. Series Parallel 2. In Ideal case, the Charging current for 200Ah battery would be _________ ? 10 A 12 A 15 A 20 A 3. In Real case, the Charging current for 200Ah battery would be _________ ? 20-22 A 14-16 A 12-14 A 10-12 A 4. …

Capacitors MCQs with Explanatory Answers 1.  The Mark on Ceramic or Non-Polarized Capacitors is “104”. What is the value of Capacitor? 104 µF 10000 µF 10000 nF 100000 pF 2.  A capacitor passes AC and blocks DC True False    3.  Leads of all capacitors are polarized. True False    4.  Value of the below disk ceramic capacitor is:   …

Capacitor Code: How to Calculate the value of Ceramic / Non-Polarized Capacitors? Below is a very useful chart for calculation the right value of Ceramic / Non – Polarized Capacitors. There are special codes and marking on capacitor, which tell about the value of capacitor.Example: Here is the Capacitor marking is “105” It’s mean that = 10 + 5 Zeros …

Power System MCQs with Explanatory Answers (Generation, Transmission and Distribution  MCQs with Explanatory Answers ) 1. Volume of The Conductor is inversely proportional to the ____________. Voltage (V) Half of the Voltage (½ V) Squire of the Voltage (V2) None of the above   2.  Which among these is not a conventional source of electrical energy? Wind Gas Coal Diesel …

Basic Concepts (Electrical Fundamentals) MCQs With Explanatory Answers 1.  What is The Basic Three Electrical Quantities.  Resistance, Capacitance, Inductance Power, Voltage, Conductance Voltage, Current, Resistance(Impedance) Current , Reluctance, Inductance 2.   In case of Short Circuit,_______Current will flow in the Circuit.  Zero. Very Low Normal. Infinite  3.  Ω (Ohm) is the Unit of ___________? Resistance (R) Inductive Reactance ( XL) Capacitive …

DC Circuits MCQs with Explanatory Answers 1. In a DC Circuit, Inductive reactance would be_________ Equal As in AC Circuits High Extremely High Zero 2. In DC Circuits, We can improve the Circuit power factor by Capacitors. True False 3. Kirchhoff’s laws are useful in determining—— Current flowing in a circuit EMFs and Voltage drops in a circuit Power in …

Alternator / Generator  MCQs with Explanatory Answers 1. The rating of Alternator / Generator may be expressed in ___________ kW kVA kVAR HP   2. Most of the Alternators have rotating field and stationary armature. True False 3. Salient pole type rotors are designed for alternators with many number of poles and Cylindrical rotors are designed for alternators with two …