A. Voltmeter
B. Multimeter
C. CRO
D. VTVM
✅ The correct answer is option C.
Electrical Engineering
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172. Which of the following are integrating instruments ?
A. Ammeters
B. Voltmeters
C. Wattmeters
D. Ampere-hour and watt-hour meters
✅ The correct answer is option D.
173. The final stage of a multistage amplifier uses______________?
A. RC coupling
B. Transformer coupling
C. Direct coupling
D. Impedance coupling
✅ The correct answer is option B.
174. A 30 V Zener will have depletion layer width_______________ that of 10 V Zener?
A. More than
B. Less than
C. Equal to
D. None of the above
✅ The correct answer is option A.
175. The sensitivity of a voltmeter which uses a 100 µA meter movement is ____________?
A. 1 kO/V
B. 10 kO/V
C. 5 kO/V
D. Data insufficient
✅ The correct answer is option B.
176. The slope of a.c. load line is ______________ that of d.c. load line?
A. The same as
B. More than
C. Less than
D. None of the above
✅ The correct answer is option B.
177. RC coupling is used for_____________amplification?
A. Voltage
B. Current
C. Power
D. None of the above
✅ The correct answer is option A.
178. What is true about the breakdown voltage in a Zener diode ?
A. It decreases when load current increases
B. It destroys the diode
C. It equals current times the resistance
D. It is approximately constant
✅ The correct answer is option D.
179. The impurity level in an extrinsic semiconductor is about_______________of pure semiconductor ?
A. 10 atoms for 108 atoms
B. 1 atom for 108 atoms
C. 1 atom for 104 atoms
D. 1 atom for 100 atoms
✅ The correct answer is option B.
180. A galvanometer of resistance G is shunted by a very small resistance S. The resistance of the resulting ammeter is ______________?
A. GS/(G+S)
B. G+S
C. G-S
D. None of the above
✅ The correct answer is option A.