Student preparing for a multiple-choice competitive exam

Pakistan's MCQ Practice Library for Competitive Exams

mcqpk.com helps students and job candidates practise multiple-choice questions by subject, then build a free test to check what they have learned.

Questions are reviewed over time, but syllabuses and factual answers can change. Always confirm important information with the relevant official source.

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Recently added practice questions

3766. The quantitative effect of temperature on chemical equilibrium is given by the____________________?
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A. None of these

B. Le-Chateliers principle

C. Arrhenius equation

D. Vant-Hoff equation
3768. The Q of a tuned amplifier is generally _________________?
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A. More than 10

B. Less than 10

C. None of the above

D. Less than 5

3770. The purpose of tanning in leather industry is to____________________?
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A. Make it flexible

B. Smoothen the leather

C. Stiffen the leather

D. Impart water resistance

3771. The purpose of RC or transformer coupling is to_____________?
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A. Increase thermal stability

B. e of the above

C. Block a.c.

D. Separate bias of one stage from another
3772. The purpose of Q-technique is ___________?
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A. to measure accurate norms of population

B. to measure correlation between X and Y variables

C. to measure a persons opinion of himself

D. items analysis in factorial design

3773. The purpose of providing dummy coils in a generator is__________________?
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A. to reduce eddy current losses

B. to provide mechanical balance for the rotor

C. to amplify voltage

D. to enhance flux density

3774. The purpose of providing bleed points in the evaporator is to__________________?
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A. Remove the product

B. Create vacuum

C. Admit the feed

D. Facilitate removal of non-condensable gases
3775. The purpose of providing an iron core in a transformer is to_____________?
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A. reduce eddy current losses

B. decrease the reluctance of the magnetic path

C. provide support to windings

D. reduce hysteresis loss

3776. The purpose of emitter capacitor (i.e. capacitor across RE) is to ______________?
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A. Avoid voltage gain drop

B. None of the above

C. Forward bias the emitter

D. Reduce noise in the amplifier

3777. The purpose of d.c. conditions in a transistor is to___________________?
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A. None of the above

B. Set up operating point

C. Reverse bias the emitter

D. Forward bias the collector

3778. The purpose of a link is to________________?
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A. all of the above

B. transmit motion

C. guide other links

D. act as a support

E. none of the above

3779. The purpose of a coupling capacitor in a transistor amplifier is to ___________________?
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A. Pass a.c. and block d.c.

B. Protect the transistor

C. Increase the output impedance of transistor

D. Provide biasing

3780. The purity of gold is expressed in________________?
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A. Gram

B. Percentage

C. Fineness

D. Carats

How to use MCQPK

  1. Choose a subject from the navigation or subject directory.
  2. Work through the questions and compare each option with the marked answer.
  3. Use the online quiz to practise a mixed or subject-specific set.
  4. Report a doubtful answer so it can be reviewed and corrected.

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