The input offset current equals the_____________?

A. Difference between two base currents
B. Average of two base currents
C. Collector current divided by current gain
D. None of these

The tail current in a differential amplifier equals ______________?

A. Difference between two emitter currents
B. Sum of two emitter currents
C. Collector current divided by current gain
D. Collector voltage divided by collector resistance

A common-mode signal is applied to ________________?

A. The noninverting input
B. The inverting input
C. Both iputs
D. Top of the tail resistor

The input stage of an Op-amp is usually a ________________?

A. Differential amplifier
B. Class b push-pull amplifier
C. Ce amplifier
D. Swamped amplifier

Current cannot flow to ground through _______________?

A. A mechanical ground
B. An a.c. ground
C. A virtual ground
D. An ordinary ground

An ammeter has a resistance of G ohms and range of I amperes. The value of resistance required in parallel to convert it into an ammeter of range nI is______________?

A. Ng
B. (n-1)g
C. G/(n-1)
D. G/n

A CRO is used to measure _________________?

A. Voltage
B. Frequency
C. Phase
D. All of above

A voltmeter has a resistance of G ohms and range V volts. The value of resistance required in series to convert it into voltmeter of range nV is________________?

A. Ng
B. G/n
C. G/(n-1)
D. (n-1)g

Which of the following is likely to have the largest resistance ?

A. Voltmeter of range 10 v
B. Moving coil galvanometer
C. Ammeter of range 1 a
D. A copper wire of length 1 m and diameter 3 mm

The resistance of an ideal voltmeter is ______________?

A. Low
B. Infinite
C. Zero
D. High