TRB exam online practice test for Electronics and Communication Engineering dept provides you with ample practice material for TRB exam preparation for cse department which adheres to the real exam format. Each TRB - ECE exam practice test has 10 questions. After completing click on to the COMPLETE TEST to know the score and the correct answers.
Electronics and Communication Engineering - TRB Online Practice Test - 2
- Online Practice Test - ECE
1. |
Four memory chips of 16 ? 4 size have their address bus connected together. The system will be of size :.
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2. |
74 LS 138 chip function as:.
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3. |
In a differential amplifier, CMRR can be improved by using increased :.
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4. |
The output of a logic gate is 1 when all its inputs are at logic 0. The gate is either:.
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5. |
A pulse train with a frequency of 1 MHz is counted using a MOD-1024 ripple counter built with J-K flip flops. For proper operation of the counter, the maximum permissible propagation delay per flip flop stage is_______ns..
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6. |
The resolution of a DAC is approximately 0.4% of its full-scale range .It is. 
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7. |
P is 16-pit signed integer . The 2 's complement representation of P is (F87B)16 . The 2 's complement representation of 8 × P is :.
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8. |
In a superheterodyne receiver, the IF is 455 KHz. If is tuned to 1200 KHz, the image frequency will be:.
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9. |
A source produces 26 symbols with an equal probability. What is the average information produced by the source ?.
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10. |
The curl of a vector H may be written in terms of vector operator as :.
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