183. How many times base circuits does a dual trace CRO can have?
A.1
B.2
C.3
D.4

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184. A Lissajous pattern on an oscilloscope has 5 horizontal tangencies and 2 vertical tangencies. The frequency of the horizontal input is 100 Hz. The frequency of the vertical input will be
A. 400 Hz
B. 2500 Hz
C. 4000 Hz
D. 5000 Hz

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185. In measurements made using a Q-meter, high impedance elements should preferably be connected in
A. star
B. delta
C. series
D. parallel

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186. Ratio of the readings of two watt meters connected to measure power in a balanced 3-phase load is 5:3 and the load is inductive. The power factor at load is
A. 0.917 lead
B. 0.6 lead
C. 0.917 lag
D. 0.6 lag

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187. The bridge suitable for the measurement of an unknown inductance in terms of a known capacitance would include
A. Maxwell and Hay
B. Maxwell and Schering
C. Hay and Schering
D. Maxwell Hay and Schering

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188. Rectifier moving coil instruments respond to
A. peak value, irrespective of the nature of the wave form
B. average value for all wave forms
C. rms value for all wave forms
D. rms value for symmetrical square waveform

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189. An advantage which a VTVM has over a nonelectronic voltmeter is
A. lower power consumption
B. lower input impedance
C. ability to measure wider range of voltage and resistance
D. greater portability

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