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This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The Power Factor Of A D.C. Circuit is Always (A) Less Than Unity (B) Unity (C) Greater Than Unity (D) Zero |
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Answer» The Correct option is (D) Zero |
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| 2. |
The transformer turns ratio determines (A) the reflected impedance (B)the ratio of primary and secondary voltages (C) the ratio of primary and secondary currents (D) All of these |
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Answer» (D) All of these |
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| 3. |
In Shell type transformers the core has ______ limbs (A) One (B) two (C) three (D) four |
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Answer» In Shell type transformers the core has three limbs. |
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| 4. |
Which of the following theorems helps in simplifying computations when the load across a circuit is varying?(A) Superposition (B) Norton’s (C) Thevenin’s (D) Maximum power transfer |
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Answer» (D) Maximum power transfer |
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| 5. |
Which supply is used for the transformers (A)DC (B) AC & DC (C) AC (D) All of the above |
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Answer» AC supply is used for the transformers. |
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| 6. |
Which Power Of The Following is The Product Of Voltage And Current is(A) True Power(B) Reactive Power(C) Voltamperes(D) Instantaneous Power |
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Answer» (C) Voltamperes |
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| 7. |
What is represented by the hypotenuse of impedance triangle? (A) Impedance drop (B) Resistance (C) reactance (D)apparent power |
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Answer» (A) Impedance drop |
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| 8. |
For A Sine Wave With Peak Value Imax The R.M.S. Value is (A) 0.5 Imax (B) 0.707 (C) 0.9 (D) 1.414 Lmax |
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Answer» For A Sine Wave With Peak Value Imax The R.M.S. Value is 0.707. |
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| 9. |
Power Factor Of The Following Circuit Will Be Unity(A) Inductance (B) Capacitance (C) Resistance (D) Both (A) And (B) |
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Answer» (C) Resistance |
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| 10. |
If the peak value of a certain sine wave voltage is 10V, what is the peak to peak value? (A) 20V (B) 10V (C) 5V (D) 7.07V |
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Answer» The Correct option is (D) 7.07V |
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| 11. |
Magnetic flux has he unit of ________(a) Newton (b) Ampere turn (c) Weber (d) Tesla |
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Answer» Magnetic flux has he unit of Ampere turn. |
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| 12. |
Core type transformer is a ________ circuit. (A)Single (B) double (C) Single &double (D) none of these |
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Answer» Core type transformer is a double circuit. |
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| 13. |
For Half wave Rectifier Second alternation is (A) ZERO (B) Positive (C) Negative (D) None |
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Answer» For Half wave Rectifier Second alternation is ZERO. |
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| 14. |
The value of supply voltage for 400 W, 4 Ω load is (A) 40 V(B) 20 V (C) 100 V (D) 1600 V |
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Answer» The value of supply voltage for 400 W, 4 Ω load is 40. |
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| 15. |
The equation for 25 cycles current sine wave having rms value of 30 amps, will be (A) 42.4sin50πt (B) 42.4sin25πt (C) 30sin25πt (D) 30sin25πt |
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Answer» (A) 42.4sin 50πt |
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| 16. |
The phase angle difference between current and voltage is 90°, the power will be (A) zero (B) maximum (C) minimum (D) VI |
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Answer» The Correct option is (A) zero |
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| 17. |
An inductor stores ________ energy (a) Electrical energy (b) Magnetic energy (c) mechanical energy (d) All |
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Answer» An inductor stores magnetic energy energy. |
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| 18. |
The Range Of Power Factor Value (A) [1 1] (B) [-1 1] (C) [1 0] (D) [0 0.5] |
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Answer» The Correct option is (B) [-1 1] |
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| 19. |
In symmetrical wave RMS Value is calculated for (A) one Alternation (B) Full Cycle (C) Both(D) None |
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Answer» (A) one Alternation |
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| 20. |
Power consumed in Resistor is(A)VI (B) VIcosɸ (C) VI sinɸ (D) VI tanɸ |
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Answer» The Correct option is (A)VI |
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| 21. |
In pure inductive circuit current ______voltage by 90°(A) lead (B) lag (C) in phase with (D) none |
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Answer» In pure inductive circuit current in phase with voltage by 90° |
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| 22. |
Average Value of sinusoidal Voltage is (A) Vm/√2 (B) 2Vm/π (C) VI /sinɸ (D) VI/cosɸ |
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Answer» Average Value of sinusoidal Voltage is 2Vm/π. |
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| 23. |
The rms value of sinusoidal voltage wave V = 200sinωt, is (A) 200/√2 V (B) 100/√2 V (C) 200√2 V (D) 100√2 V |
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Answer» (A) 200/√2 V |
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| 24. |
RMS Value of sinusoidal Voltage is (A) Vm/√2 (B) 0 (C) VI /sinɸ (D) VI/cosɸ |
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Answer» RMS Value of sinusoidal Voltage is Vm/√2. |
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| 25. |
Power factor CosФ= (A) ZR (B) RZ (C) R/Z (D) Z/R |
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Answer» Power factor CosФ= R/Z. |
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| 26. |
Whenever there is a relative motion of a coil & a magnetic field, a voltage is induced in the coil. Such a voltage is called(A) Statically induced voltage (B) Dynamically induced voltage (C) Self-induced voltage (D) Mutually induced voltage |
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Answer» (B) Dynamically induced voltage |
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| 27. |
Two resistors each of 4Ω and 12Ω are connected in parallel and the parallel combination is connected in series with a 2Ω resistor. If this circuit is connected across a 100V supply , the total current drawn is (A) 50A (B) 25A (C) 20A (D) 2A |
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Answer» The Correct option is (C) 20A |
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| 28. |
If a flux of Φ Weber’s links with a coil of N turns , the induced voltage in the coil is given by (A) N dΦ/dt (B) –N dΦ/dt (C) NBlu (D) none |
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Answer» (B) –N dΦ/dt |
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| 29. |
Form factor of sinusoidal Voltage is (A) 1.11 (B) 2 (C) 3 (D) 4 |
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Answer» Form factor of sinusoidal Voltage is 1.11. |
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| 30. |
The direction of magnetic field is from(A) North-south (B) South-North (C) Both (D) None of these |
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Answer» (A)North-south |
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| 31. |
The polarity of the induced voltage is determined by ; (A) Ampere’s law (B) Lenz’s law (C) Kirchhoff’s law (D) Right hand rule |
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Answer» (B) Lenz’s law |
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| 32. |
Thevenin’s Voltage is (a) Open circuit voltage (b) Short Circuit Voltage (c) Closed Circuit voltage (d) None of these |
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Answer» (a) Open circuit voltage |
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| 33. |
Direction of Induced EMF is given by (A) Flemings Right hand rule (B) Flemings Left hand rule (C) Faraday Law (D) Lenzs Law |
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Answer» (A) Flemings Right hand rule |
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| 34. |
The direction of dynamically Induced EMF can be determined with the help of (a) Lenz’s Law (b) Flemings Left Hand Rule (c) Flemings Right Hand Rule (d) None of these |
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Answer» (b) Flemings Left Hand Rule |
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| 35. |
A Loop in a Circuit is defined as a (a) Closed path (b) Junction point of two or more branches (c) inter connected elements (d) All of these |
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Answer» (a) Closed path |
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| 36. |
Faradays- First law the induced EMF is (a) Dynamically Induced EMF (b) Statically Induced EMF(c) Eddy EMF (d) None of these |
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Answer» (a) Dynamically Induced EMF |
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| 37. |
KCL is applicable at (a) A Junction (b) Resistor (c) Loop (d) All of these |
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Answer» (a) A Junction |
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| 38. |
Super-Position Theorem is applicable for a (a) Linear Bilateral Network (b) Non- Linear Bilateral Network (c) Linear Uni-ateral Network (d)All the above |
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Answer» (a) Linear Bilateral Network |
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| 39. |
Laminated insulations coated with varnish are normally used in the transformer(A) To reduce reluctance of magnetic path (B) To reduce the effect of eddy current (C) To reduce the hysteresis effect (D) To increase the reluctance of magneticpath |
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Answer» (B) To reduce the effect of eddy current |
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| 40. |
All The Rules And Laws Of D.C. Circuit Also Apply To A.C. Circuit Containing(A) Capacitance Only (B) Inductance Only (C) Resistance Only (D) All Above |
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Answer» (D) All Above |
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| 41. |
The voltage induced in an inductor of L henry is represented by(A) Li (B) L/I (C) L di/dt (D) None of these |
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Answer» The Correct option is (C) L di/dt |
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| 42. |
The unit of capacitance is (a) ohms (b) Farads (c) Amperes (d) Tesla |
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Answer» The unit of capacitance is Farads. |
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| 43. |
The Units For Resistance is (A) Farads (B) Henry (C) Ohms (D) Voltage |
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Answer» The Units For Resistance is Ohms. |
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| 44. |
The Units For Current is (A) Farads (B) Henry (C) Ohms (D) Ampere |
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Answer» The Units For Current is Ampere. |
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| 45. |
The Units For Capacitor is (A) Farads (B) Henry (C) Ohms (D) None |
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Answer» The Units For Capacitor is Farads. |
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| 46. |
The unit of inductance is (a) ohms (b) Volts (c) Amperes (d) Henry |
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Answer» The unit of inductance is Henry. |
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| 47. |
The unit of resistance is (A) Ohms (B) Volts (C) Amperes (D) Tesla |
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Answer» The unit of resistance is Ohms. |
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