How can i display post loop in table format?

You need 3 separate loops. One for each row, with each post creating a new column:

<div class="acadp">
    <table>
        <tr>
            <?php while( $acadp_query->have_posts() ) : $acadp_query->the_post();  ?>
                <td><?php the_title(); ?></td>
            <?php endwhile; ?>
        </tr>

        <tr>
            <?php while( $acadp_query->have_posts() ) : $acadp_query->the_post();  ?>
                <td><?php the_content(); ?></td>
            <?php endwhile; ?>
        </tr>

        <tr>
            <?php while( $acadp_query->have_posts() ) : $acadp_query->the_post();  ?>
                <td><?php the_author(); ?></td>
            <?php endwhile; ?>
        </tr>
    </table>
</div>

<?php wp_reset_postdata(); ?>