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A (0-120)V voltmeter has an accuracy of 1% full scale reading. The voltage is 60 V.
The limiting error is

A) 2% B) 0.2%
C) 1.2% D) None of these

An ammeter has a current range of 0-—10A, and its internal resistance is 0.5 ©. In
order to change the range to 0O—50A, we need to add a resistance of

A) 0.125 Q in parallel with the meter

B) 0.125 Q in series with the meter

C) 0.1 Q in parallel with the meter

0) 0.1 Q in series with the meter

Astationary closed Lissajous pattern on an oscilloscope has 5 horizontal tangencies
and 3 vertical tangencies for a vertical input with frequency 8 kHz. The frequency of
horizontal input is

A) 4.8 kHz B) 13.3 kHz

C) 8 kHz D) 1 kHz

An amplifier has an open loop voltage gain of — 300. This gain is reduced to — 100 when
negative feedback is applied. The reverse transmission factor 8 of this system is

A) — 0.0033 8) - 0.0066

C) 0.0033 D) 0.0066
Match the following :

i. SCR a. bidirectional switch
ii. Transistor b. switch

॥ 7೧140 c. bidirectional uncontrolled device
iv. DIAC d. switch and amplifier
A) i-a, — ii-b. 1-0, 4-௦

8) i-b, ॥-५, க ४-०

൭10, 440) 14௦) ‏۷۵ا‎

൧) 1-0, ரிம்‌, ரா பக

Simplify the expression :

Y =AB+(A+B)C

^) 88+ 6 B) AB

೦1% 0) None of these

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