21. To determine the polarity of the voltage drop across a resistor, it is necessary to know A. Value of current through the resistor B. Direction of current through the resistor C. Value of resistor D. E.m.f. in the circuit Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option B No explanation is given for this question Let's Discuss on Board
22. Thevenin resistance Rth is found A. by removing voltage sources along with their internal resistances B. by short-circuiting the given two terminals C. between any two ‘open’ terminals D. between same open terminals as for Etk Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
23. An ideal voltage source has A. Zero internal resistance B. Open circuit voltage equal to the voltage on full load C. Terminal voltage in proportion to current D. Terminal voltage in proportion to load Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option A No explanation is given for this question Let's Discuss on Board
24. Kirchhoff’s law is applicable to A. Passive networks only B. A.C. circuits only C. D.C. circuits only D. Both A.C. as well D.C. circuits Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board 25. A star circuit has element of resistance R/2. The equivalent delta elements will be A. R/6 B. RIG C. 3/2R D. 4R Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board 1 2 3 4 5 6 7 8 9 10
24. Kirchhoff’s law is applicable to A. Passive networks only B. A.C. circuits only C. D.C. circuits only D. Both A.C. as well D.C. circuits Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option D No explanation is given for this question Let's Discuss on Board
25. A star circuit has element of resistance R/2. The equivalent delta elements will be A. R/6 B. RIG C. 3/2R D. 4R Answer & Solution Discuss in Board Save for Later Answer & Solution Answer: Option C No explanation is given for this question Let's Discuss on Board